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15+0.90m=3(20+0.25)
We move all terms to the left:
15+0.90m-(3(20+0.25))=0
We add all the numbers together, and all the variables
0.90m+15-(3(20.25))=0
We add all the numbers together, and all the variables
0.90m-45.75=0
We move all terms containing m to the left, all other terms to the right
0.90m=45.75
m=45.75/0.90
m=50+0.75/0.90
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