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3m-1+2m+1=13
We simplify the equation to the form, which is simple to understand
3m-1+2m+1=13
We move all terms containing m to the left and all other terms to the right.
+3m+2m=+13+1-1
We simplify left and right side of the equation.
+5m=+13
We divide both sides of the equation by 5 to get m.
m=2.6
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