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0.45-m=0.9m
We move all terms to the left:
0.45-m-(0.9m)=0
We add all the numbers together, and all the variables
-m-(+0.9m)+0.45=0
We add all the numbers together, and all the variables
-1m-(+0.9m)+0.45=0
We get rid of parentheses
-1m-0.9m+0.45=0
We add all the numbers together, and all the variables
-1.9m+0.45=0
We move all terms containing m to the left, all other terms to the right
-1.9m=-0.45
m=-0.45/-1.9
m=0.45/1.9
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