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7.8m-7-13.9m=9.1-6.1m-16.1
We move all terms to the left:
7.8m-7-13.9m-(9.1-6.1m-16.1)=0
We add all the numbers together, and all the variables
7.8m-13.9m-(-6.1m-7)-7=0
We add all the numbers together, and all the variables
-6.1m-(-6.1m-7)-7=0
We get rid of parentheses
-6.1m+6.1m+7-7=0
We add all the numbers together, and all the variables
=0
m=0/1
m=0
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