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OpenStudy (anonymous):
Solve y = 3x – 12 by the substitution method. 2x – 3y = -13
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OpenStudy (luigi0210):
sub in y: 2x-3(3x-12)=-13
OpenStudy (luigi0210):
Now solve: 2x-9x+36=-13 -7x=-39 x=39/7
OpenStudy (luigi0210):
*-7x=-49 x=7 Now plug x back into an equation and solve for y
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