15=m+[-9]

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Solution for 15=m+[-9] equation:


15=m+[-9]

We simplify the equation to the form, which is simple to understand 
15=m+(-9)

Remove unnecessary parentheses
+15=+m-9

We move all terms containing m to the left and all other terms to the right. 
-1m=-9-15

We simplify left and right side of the equation. 
-1m=-24

We divide both sides of the equation by -01 to get m. 
m=24

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