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-2(5m+3)+4=90
We move all terms to the left:
-2(5m+3)+4-(90)=0
We add all the numbers together, and all the variables
-2(5m+3)-86=0
We multiply parentheses
-10m-6-86=0
We add all the numbers together, and all the variables
-10m-92=0
We move all terms containing m to the left, all other terms to the right
-10m=92
m=92/-10
m=-9+1/5
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