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13.2=4-1.25x
We move all terms to the left:
13.2-(4-1.25x)=0
We add all the numbers together, and all the variables
-(-1.25x+4)+13.2=0
We get rid of parentheses
1.25x-4+13.2=0
We add all the numbers together, and all the variables
1.25x+9.2=0
We move all terms containing x to the left, all other terms to the right
1.25x=-9.2
x=-9.2/1.25
x=-7+0.45/1.25
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