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3x - 2y + 7x + 4y
= 3x + 7x - 2y +4y
= (3+7)x + (-2+4)y
= 10x + 2y
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Solve 4y equals 2y plus 40?
4y = 2y + 40 4y - 2y = 2y -2y +40 2y = 40 y = 20 check 4(20) = 2(20) +40 80 = 80
How do you solve this equation 42 plus 4y-12 equals 13y-12-2y?
42+4y -12 = 13y -12 -2y 4y -13y+2y = 12 -12 -42 -7y = -42 y = 6
Select the system of equations that corresponds to the given graph?
Answers to pick: -2x - y = 4 2x + y = -2 -8x + 4y = -16 -4x + 2y = -8 -x - 2y = 6 -7x + 4y = 16 2x + 3y = 6 3x + 2y = 4
Solve the following systems of equations 3x-2y equals 24 6x-4y equals -6?
1. 3x-2y=24 2. 6x-4y=-6 Note that we can write the first equation as -2y=-3x+24 and the second as -4y=-6x-6 Now divide the first equation by -2 and the second by -4 1. y=3/2x-12 2. y=3/2x+6/4 This tells us the lines have the same slope and different y intercepts which means they are parallel. There is NO solution. If you use elimination or substitution you find the same thing. Note, if you try emiminate you end up with 0y=-54 which is not true also telling you there is no solution.
Does 2y squared equals 4y?
No, it equals 4y2
Simplify 3x plus 2y plus 2 equals 4y plus 4?
The equation can be simplified to show a value of Y in terms of X. 3X + 2Y +2 = 4Y + 4 3X + 2 = 2Y + 4 3X -2 = 2Y and 2Y = 3X - 2 means that Y = (3/2 X) -1
3x plus 2y equals 4 -3x plus 4y equals -10?
(2, -1)
What is 3x - 4y?
3x - 4y = -1
How to find elimination method for 3x - 4y equals 30 and 3x plus 2y equals 6?
Subtract: 3x - 3x - 4y - 2y = 30 - 6 ie -6y = 24 so y = -4 and x = 14/3
3x plus 2y equals 7 2x plus 4y equals 18?
(-1, 5)
3x plus 2y equals 7 and 2x plus 4y equals 18?
(-1, 5)
What is the answer for -3x-2x plus 4y-2y?
The answer is -5x + 2y. The terms with the same variable are combined by adding or subtracting their coefficients, and then the result is written with the corresponding variable. In this case, -3x and -2x combine to give -5x, and 4y and -2y combine to give 2y.
Can you show me how to solve graphically 3x plus 4y equals 5 and x-2Y equals 5?
3x + 4y = 5x - 2y = 5leads to:x = 5 + 2ySo:3(5 + 2y) + 4y = 515 + 10y = 510y= -10y=-1and therefore if y = -1 then x = 3.
Is 3x plus 2y equals 15 and 6x plus 4y equals 30 Consistent or inconsistent?
We will see. 3X + 2Y = 15 6X + 4Y = 30 I do not like the look of elimination, so substitution 3X + 2Y = 15 3X = 15 - 2Y X = 5 - 2/3Y -------------- 6(5 - 2/3Y) + 4Y = 30 30 - 12/3Y = 30 30 - 4Y = 30 this is inconsistent in approach 3(5 - 2/3Y) + 2Y = 15 15 - 15/3Y = 15 another bad approach, try elimination to show inconsistency - 2(3X + 2Y = 15) 6X + 4Y + 30 -6X - 4Y = - 30 6X + 4Y = 30 I think it is safe to say these systems of equations are inconsistent --------------------
What is this expression but simplified 3x minus 4y minus x plus 6y plus 2 plus 4x?
Collect like terms: 3x - x + 4x - 4y + 6y + 2 = 6x + 2y + 2
How do you solve the system of equation x plus 2y-2 3x plus 4y6?
If you mean x+2y = -2 and 3x+4y = 6 then the solutions to the equations are x = 10 and y = -6
Does 2x plus 4y equals 16 and 3x - 2y equals 6 have the same solution?
2x + 4y = 16 is the same as 4y = -2x + 16 divide both sides by 4 and you get y = (-x/2) +4 3x - 2y = 6 is the same as -2y = -3x + 6 divide both sides by 2 and you get y = (-3x/2) + 3 therfore they do not have the same solution
