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4m-3m=-8(m-5)+7(m-4)
We simplify the equation to the form, which is simple to understand
4m-3m=-8(m-5)+7(m-4)
Reorder the terms in parentheses
4m-3m=+(-8m+40)+7*(m-4)
Remove unnecessary parentheses
+4m-3m=-8m+40+7+*(+m-4+)
Reorder the terms in parentheses
4m-3m=-8m+40+(+7m-28)
Remove unnecessary parentheses
+4m-3m=-8m+40+7m-28
We move all terms containing m to the left and all other terms to the right.
+4m-3m+8m-7m=+40-28
We simplify left and right side of the equation.
+2m=+12
We divide both sides of the equation by 2 to get m.
m=6
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