3 years ago

A system of equations is shown below.

2 answers:

8 0

I: 4x-5y=-10
II: 2x-7y=4

c) multiply the second equation by -2 and add the result to the first equation
II*-2=-4x+14y=-8

add I+II*-2: 4x-5y+(-4x+14y)=-10-8
=9y=-18

tiny-mole [99]3 years ago

4 0

The correct answer is D
Hope this helped :)

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