Solve for x
x=-\frac{M}{4}
Solve for M
M=-4x
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-4x=M
The equation is in standard form.
\frac{-4x}{-4}=\frac{M}{-4}
Divide both sides by -4.
x=\frac{M}{-4}
Dividing by -4 undoes the multiplication by -4.
x=-\frac{M}{4}
Divide M by -4.
M=-4x
Swap sides so that all variable terms are on the left hand side.
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