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12m-9-10m+3-2m=10-3m+9
We simplify the equation to the form, which is simple to understand
12m-9-10m+3-2m=10-3m+9
We move all terms containing m to the left and all other terms to the right.
+12m-10m-2m+3m=+10+9+9-3
We simplify left and right side of the equation.
+3m=+25
We divide both sides of the equation by 3 to get m.
m=8.3333333333333
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