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31.20+0.12x=28.62+0.08x
We move all terms to the left:
31.20+0.12x-(28.62+0.08x)=0
We add all the numbers together, and all the variables
0.12x-(0.08x+28.62)+31.20=0
We add all the numbers together, and all the variables
0.12x-(0.08x+28.62)+31.2=0
We get rid of parentheses
0.12x-0.08x-28.62+31.2=0
We add all the numbers together, and all the variables
0.04x+2.58=0
We move all terms containing x to the left, all other terms to the right
0.04x=-2.58
x=-2.58/0.04
x=-64+0.02/0.04
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