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1/1-15/4=b
We move all terms to the left:
1/1-15/4-(b)=0
We add all the numbers together, and all the variables
-1b-15/4=0
We multiply all the terms by the denominator
-1b*4-15=0
Wy multiply elements
-4b-15=0
We move all terms containing b to the left, all other terms to the right
-4b=15
b=15/-4
b=-3+3/4
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