13.50=3+1.20x

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Solution for 13.50=3+1.20x equation:



13.50=3+1.20x
We move all terms to the left:
13.50-(3+1.20x)=0
We add all the numbers together, and all the variables
-(1.20x+3)+13.50=0
We add all the numbers together, and all the variables
-(1.20x+3)+13.5=0
We get rid of parentheses
-1.20x-3+13.5=0
We add all the numbers together, and all the variables
-1.2x+10.5=0
We move all terms containing x to the left, all other terms to the right
-1.2x=-10.5
x=-10.5/-1.2
x=8+0.9/1.2

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