90+0.4m=40+0.9m

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Solution for 90+0.4m=40+0.9m equation: 



90+0.4m=40+0.9m

We move all terms to the left:

90+0.4m-(40+0.9m)=0

We add all the numbers together, and all the variables

0.4m-(0.9m+40)+90=0

We get rid of parentheses

0.4m-0.9m-40+90=0

We add all the numbers together, and all the variables

-0.5m+50=0

We move all terms containing m to the left, all other terms to the right

-0.5m=-50

m=-50/-0.5

m=+100

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