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Solve for m
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x-4m=2m\left(x-4\right)
Multiply both sides of the equation by x-4, the least common multiple of x-4,4-x.
x-4m=2mx-8m
Use the distributive property to multiply 2m by x-4.
x-4m-2mx=-8m
Subtract 2mx from both sides.
x-4m-2mx+8m=0
Add 8m to both sides.
x+4m-2mx=0
Combine -4m and 8m to get 4m.
4m-2mx=-x
Subtract x from both sides. Anything subtracted from zero gives its negation.
\left(4-2x\right)m=-x
Combine all terms containing m.
\frac{\left(4-2x\right)m}{4-2x}=-\frac{x}{4-2x}
Divide both sides by 4-2x.
m=-\frac{x}{4-2x}
Dividing by 4-2x undoes the multiplication by 4-2x.
m=-\frac{x}{2\left(2-x\right)}
Divide -x by 4-2x.
x-4m=2m\left(x-4\right)
Variable x cannot be equal to 4 since division by zero is not defined. Multiply both sides of the equation by x-4, the least common multiple of x-4,4-x.
x-4m=2mx-8m
Use the distributive property to multiply 2m by x-4.
x-4m-2mx=-8m
Subtract 2mx from both sides.
x-2mx=-8m+4m
Add 4m to both sides.
x-2mx=-4m
Combine -8m and 4m to get -4m.
\left(1-2m\right)x=-4m
Combine all terms containing x.
\frac{\left(1-2m\right)x}{1-2m}=-\frac{4m}{1-2m}
Divide both sides by 1-2m.
x=-\frac{4m}{1-2m}
Dividing by 1-2m undoes the multiplication by 1-2m.
x=-\frac{4m}{1-2m}\text{, }x\neq 4
Variable x cannot be equal to 4.