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5x+12=-7x solve each system by subsitution

5x+12=-7x solve each system by subsitution
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2 votes
5x+12=-7x solve each system by subsitution

5x+12=-7x solve each system by subsitution-example-1
User Johnathon Havens
by
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2 Answers

5 votes
5x+12=-7x
12x+12=0 (+7x)
12x=-12 (-12)
x=-1 (/12)

y=5x+12
y=5(-1)+12
y=-5+12
y=7

Hope this helps:)
User Adi Miller
by
7.6k points
4 votes
on the problem minus 5x to the -7 so you'll just have 12= -12x and the answer is x=-1 
User Johnnyaug
by
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