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m\left(-x+4\right)=2\left(x+2\right)
Variable x cannot be equal to 4 since division by zero is not defined. Multiply both sides of the equation by -x+4.
-mx+4m=2\left(x+2\right)
Use the distributive property to multiply m by -x+4.
-mx+4m=2x+4
Use the distributive property to multiply 2 by x+2.
-mx+4m-2x=4
Subtract 2x from both sides.
-mx-2x=4-4m
Subtract 4m from both sides.
\left(-m-2\right)x=4-4m
Combine all terms containing x.
\frac{\left(-m-2\right)x}{-m-2}=\frac{4-4m}{-m-2}
Divide both sides by -m-2.
x=\frac{4-4m}{-m-2}
Dividing by -m-2 undoes the multiplication by -m-2.
x=-\frac{4\left(1-m\right)}{m+2}
Divide 4-4m by -m-2.
x=-\frac{4\left(1-m\right)}{m+2}\text{, }x\neq 4
Variable x cannot be equal to 4.