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130=39.87+0.25x
We move all terms to the left:
130-(39.87+0.25x)=0
We add all the numbers together, and all the variables
-(0.25x+39.87)+130=0
We get rid of parentheses
-0.25x-39.87+130=0
We add all the numbers together, and all the variables
-0.25x+90.13=0
We move all terms containing x to the left, all other terms to the right
-0.25x=-90.13
x=-90.13/-0.25
x=360+0.13/0.25
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