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15-12-2020
Mathematics

contestada

4x-5y=0
8x+5y=-60
what is the answer by substitution or elimination?

Respuesta :

15-12-2020

The answer is -5, -5 added by 5 cancels each other out. Then when you add 4x + 8x, you get 12x. So when you do 12x= -60, you get -5.

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