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3*4m=20.4
We move all terms to the left:
3*4m-(20.4)=0
We add all the numbers together, and all the variables
3*4m-20.4=0
Wy multiply elements
12m-20.4=0
We move all terms containing m to the left, all other terms to the right
12m=20.4
m=20.4/12
m=1+1.9090909090909/2.7272727272727
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