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OpenStudy (anonymous):
I need help with this question 9x - 2y =-54 7x + 47 = y substitution method
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OpenStudy (anonymous):
substitute y=7x+47 in equation one first
OpenStudy (anonymous):
The second line to be reduced to x+7=y, so the first line is... 9x-2(x+7)=-54 9x-2x-14=-54 add 14 to each side 9x-2x=40 7x=40
OpenStudy (anonymous):
x=40/7
OpenStudy (anonymous):
small mistake misspacgirl in line 2,-2(x+47):)
OpenStudy (anonymous):
OHHHHHH... oopsss! Im sryyy! :O
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OpenStudy (anonymous):
x=-8 y=-9
OpenStudy (anonymous):
one small mistake can make a huge difference!!!
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