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-1.6+3x=12.5-4x
We move all terms to the left:
-1.6+3x-(12.5-4x)=0
We add all the numbers together, and all the variables
3x-(-4x+12.5)-1.6=0
We get rid of parentheses
3x+4x-12.5-1.6=0
We add all the numbers together, and all the variables
7x-14.1=0
We move all terms containing x to the left, all other terms to the right
7x=14.1
x=14.1/7
x=2+0.1/7
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