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-2m+8+4m=28
We simplify the equation to the form, which is simple to understand
-2m+8+4m=28
We move all terms containing m to the left and all other terms to the right.
-2m+4m=+28-8
We simplify left and right side of the equation.
+2m=+20
We divide both sides of the equation by 2 to get m.
m=10
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