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15.5-y=7.9y=8.4
We move all terms to the left:
15.5-y-(7.9y)=0
We add all the numbers together, and all the variables
-y-(+7.9y)+15.5=0
We add all the numbers together, and all the variables
-1y-(+7.9y)+15.5=0
We get rid of parentheses
-1y-7.9y+15.5=0
We add all the numbers together, and all the variables
-8.9y+15.5=0
We move all terms containing y to the left, all other terms to the right
-8.9y=-15.5
y=-15.5/-8.9
y=1+2.53846153846/3.42307692308
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