starwarsfan123 starwarsfan123

30-03-2017
Mathematics

contestada

i'm not sure how to solve the systems of equations problem below

9x-4y= -7
7x-12= 39

What does X equal?
What does Y equal?

Respuesta :

smiles4miles smiles4miles

30-03-2017

solve the lower equation first

+12 on each side
7x=51
divide by 7
x=51/7

then use that to solve the upper equation

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