10-12-2018
Mathematics

contestada

How do I solve 4x+8y=20 -4x+2y=-30

Respuesta :

mklancehernandez mklancehernandez

14-12-2018

Answer:

i got this

Step-by-step explanation:

4x+8y=20 minus 4x both sides but dont minus

-4x -4x

8y=20-4x divide to get y alone

8 8

y= -2x+2.5

know do it to the other side

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