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OpenStudy (k.binks):
Solve 4x + 3y = 13 by the substitution method. x + y = 4 I understand how to substitute, but I'm unsure of the negatives in this one
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rishavraj (rishavraj):
x + y = 4 x = 4 - y so now plug the value of "x" in 1st equation
OpenStudy (k.binks):
For some reason I did -y=x-4. Careless mistake, thank you again
rishavraj (rishavraj):
u should hav written tht y = 4 - x
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