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56.3=12.8+x
We move all terms to the left:
56.3-(12.8+x)=0
We add all the numbers together, and all the variables
-(x+12.8)+56.3=0
We get rid of parentheses
-x-12.8+56.3=0
We add all the numbers together, and all the variables
-1x+43.5=0
We move all terms containing x to the left, all other terms to the right
-x=-43.5
x=-43.5/-1
x=43+0.5/1
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