If: 3x+2y = 5x+2y = 7 which is the same as 7 = 7 = 7
Then: 3x+2y = 7 and 5x+2y = 7
Subtracting equations: x = 0
Therefore by substitution: x = 0 and y = 3.5
A solution means: Show the numerical values of 'x' and 'y'. You can't find either one with only a single equation. You need another one. When you have two equations, you can find values for both 'x' and 'y'.
Without any equality sign and not knowing the plus or minus values of the given terms it can't be considered to be an equation.
If: x+y = 5 Then: y = -x+5 which is now in slope-intercept form
3+3x3-3+3=3+9-3+3=12-3+3=9+3=12the answer is 12
To solve the equation you need to know at least a value for x or y. For example if x = 2 then the solution will show that y = 1.
There are 2 unknowns
A solution means: Show the numerical values of 'x' and 'y'. You can't find either one with only a single equation. You need another one. When you have two equations, you can find values for both 'x' and 'y'.
Without any equality sign and not knowing the plus or minus values of the given terms it can't be considered to be an equation.
the answer is E equals to 12.5 but i dont know how it came up with it.
There can be no "answer" to just one linear equation in two variables.
An equation, such as the one above, may be true for some values of the variable(s). There need not be any solution in the relevant domain. To "show" something, in this context, you need an identity - an equation that is true whatever the value of the variable. The above is NOT an identity, since for x=0 is gives -40 = 0 which is clearly not true.
The first step is to show an example of the quadratic equation in question because the formula given is only the general form of a quadratic equation.
Type an apostrophe first: '=
you have to find the key with the plus and equals symbol. Then push the shift key and the plus/equals key. The "cross" should show up. Plus (+) equals (=). The plus should be above the equals.
You need to show the equation. It makes a difference.
If: x+y = 5 Then: y = -x+5 which is now in slope-intercept form
3+3x3-3+3=3+9-3+3=12-3+3=9+3=12the answer is 12