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-2.15+4=12.5-3x
We move all terms to the left:
-2.15+4-(12.5-3x)=0
We add all the numbers together, and all the variables
-(-3x+12.5)-2.15+4=0
We add all the numbers together, and all the variables
-(-3x+12.5)+1.85=0
We get rid of parentheses
3x-12.5+1.85=0
We add all the numbers together, and all the variables
3x-10.65=0
We move all terms containing x to the left, all other terms to the right
3x=10.65
x=10.65/3
x=3+1/1.8181818181818
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