Solve for m
m=9-8y
Solve for y
y=\frac{9-m}{8}
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m-9=-8y
Subtract 8y from both sides. Anything subtracted from zero gives its negation.
m=-8y+9
Add 9 to both sides.
8y-9=-m
Subtract m from both sides. Anything subtracted from zero gives its negation.
8y=-m+9
Add 9 to both sides.
8y=9-m
The equation is in standard form.
\frac{8y}{8}=\frac{9-m}{8}
Divide both sides by 8.
y=\frac{9-m}{8}
Dividing by 8 undoes the multiplication by 8.
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