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15.3+x=1.3+-x
We move all terms to the left:
15.3+x-(1.3+-x)=0
We add all the numbers together, and all the variables
x-(-1x)+15.3=0
We get rid of parentheses
x+1x+15.3=0
We add all the numbers together, and all the variables
2x+15.3=0
We move all terms containing x to the left, all other terms to the right
2x=-15.3
x=-15.3/2
x=-7+1/1.53846153846
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