Best Answer

Add the two equations: x + y - x + 2y = 8 + 7 ie 3y = 15 so y = 5 making x = 3.

Q: The addition method for x plus y equals 8 and -x plus 2y equals 7?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

x=1, y=1

3x + 2y = 4; 2x - 2y = 16 Add; 5x = 20 so x = 4 and y is therefore -4

y=16 x= -4

This means that 2y - 3 = 2y + 4 which is not possible.

Solving by the elimination method: x = 7 and y = 2

Related questions

x=1, y=1

3x + 2y = 4; 2x - 2y = 16 Add; 5x = 20 so x = 4 and y is therefore -4

y=16 x= -4

This means that 2y - 3 = 2y + 4 which is not possible.

Solving by the elimination method: x = 7 and y = 2

No 2y-3 is not equals y plus 2AND how old are u?

6x+7y=-6 3(-2x-3y=2) +________ -2y=0 => y=0 Therefore x=-1

(3, 2)

2y+26 = 28 2y = 28-26 2y = 2 y = 1

-2y=x+8 is the answer

2y(x+2)=

Exactly (2y + 4) .