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10-08-2017
Mathematics

contestada

2x + 7y = 8
3x + 2y = -5
Solve algebraically.

Respuesta :

10-08-2017

3(2x+7y=8)-2(3x+2y=-5)

6x+21y-6x-4y=24+10

17y=34

y=2, which makes 2x+7y=8 become

2x+7(2)=8

2x+14=8

2x=-6

x=-3

So the solution to the system of equations is the point (-3, 2)

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