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3190-30m=1840+20m
We move all terms to the left:
3190-30m-(1840+20m)=0
We add all the numbers together, and all the variables
-30m-(20m+1840)+3190=0
We get rid of parentheses
-30m-20m-1840+3190=0
We add all the numbers together, and all the variables
-50m+1350=0
We move all terms containing m to the left, all other terms to the right
-50m=-1350
m=-1350/-50
m=+27
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