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Q: What does x y equal in chemical equations?

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x = 4 and y = 6

42

y = 4, x = 6

let x = first number, y = second. x+y = 155 x-y = 11 add the two equations 2x= 166 x = 83 y = 72

y=x y=6-x Set the two equations equal to each other to yield a solution: x=6-x 2x=6 x=3 x=3 will satisfy both equations, that is plugging in x=3 will give the same value for y y=(3)=3 y=6-(3)=3

110

y = x - 1 y - x = 3 y = x - 1 y = x + 3 Since both equations represent straight lines that have equal slopes, 1, then the lines are parallel to each other. That is that the lines do not intersect, and the system of the equations does not have a solution.

x-y = 120 x+y = 150 add equations: 2x = 270 x = 135 y = 15

By solving the simultaneous equations the values of x and y should be equal to the given coordinate

For your situation, you probably have 2 equations with 2 unknowns (x and y, for example). If this is the case, solve both equations for y (so you get y=....). Then, since these are both equal to the same thing (y) they are both equal to each other. This means set the 2 equations equal to each other. Now you will only have 1 unknown (x, most likely) and 1 equation (with stuff on both sides). Solve for x, you should get a number. Now, go back to the beginning where you solved for y and plug in your x-value into one of the equations to find a number for y.When you get done, it is always a good idea to substitute the solutions into the original equations to verify that your calculations were correct.

Presumably this is a simultaneous equation in the form of: x = 8-2y y-x = 4 Which is the same as: 2y+x = 8 y-x = 4 Add both equations together: 3y = 12. So y will equal 4. Substitute the value of y into the original equations to find the value of x: So: x = 0 and y = 4

It is an equation of a straight line. But it is not possible to tell you what x and y equal because you have only given one equation. Since there are two variables (x and y), you need at least 2 equations to solve for x and y. (Likewise if you had 3 variables, you would need at least 3 equations).

x = 2y y = x - 2 or x = 2y subtract 2y to both sides x - 2 = y subtract y and add 2 to both sides x - 2y = 0 multiply by -1 to both sides x - y = 2 -x + 2y = 0 x - y = 2 add these two equations together y = 2 substitute 2 for y into the first equation, x = 2y x = 2(2) = 4 Thus the solution of these linear system of equations is the point (4, 2). Check:

x + y = 18 x - y = -4

x + y = 50 x - y = 16 --------------- (add the two equations to solve for x) 2x = 66 x = 33 then substitute x into one of the above equations to get y = 17

for example: 2x+y=8----(equation1) and x+y=6----(equation2) since "y" in both equations r positive and equal we can minus them(equation1-equation2) 2x-x y-y 8-6 so x=2 we use this to substitute the x (with 2) using any equation, x+y=6 i.e (2)+y=6 y=6-2 so y=4 There. That was on way.we should always make either of the variable equal. i.e by multiplying the entire equation.

Simultaneous equations are where you have multiple equations, often coupled with multiple variables. An example would be x+y=2, x-y=2. To solve for x and y, both equations would have to be used simultaneously.

I will give you a very simple example and you can see how it is done x+y=10 -x+y=30 So if we add these equations together, we eliminate the variable x. We can do this since adding equal thing to other equal things always gives us equal things. So we have 2y=40 or y=20 Now plug that back in either equation. x+20=10 and we have x=-10

x - y = -3 2x + y = 12 (add both equations) 3x = 9 (divide by 3 to both sides) x = 3 x - y = -3 (replace x with 3) 3 - y = -3 subtract 3 to both sides) -y = -6 (multiply by -1 to both sides) y = 6 The solution of the system of the equations is (3, 6).

No

Take the two numbers as X and Y. The mean of the two numbers would be (X+Y)/2 which will be equal to 24. So : (X+Y)/2 = 24 X+Y=48 - This is equation no. 1 The difference between the numbers is X-Y which is equal to 8: X-Y=8 - This is equation no. 2 Adding the two simultaneous equations above would give: X+Y + X-Y=48 + 8 2X=56 So: X=28 Substitute this in any one of the above equations: Equation no. 1 - 28 + Y=48 Y=20 So the two numbers are 28 and 20.

Without any equality signs the given terms can't be considered to be equations but if you mean x+y = 10 and x-y = 6 then the value of x is 8 and the value of y is 2 and both equations intersect at (8, 2) on the Cartesian plane.

-2

What is the solution set for the equations x-y=2 and -x+y=2

x + y = 1 x + y = 2