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m=-4-(-8)
We simplify the equation to the form, which is simple to understand
m=-4-(-8)
Remove unnecessary parentheses
m=-4+8
We move all terms containing m to the left and all other terms to the right.
+1m=-4+8
We simplify left and right side of the equation.
+1m=+4
We divide both sides of the equation by 1 to get m.
m=4
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