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8.8=-0.04x+20
We move all terms to the left:
8.8-(-0.04x+20)=0
We get rid of parentheses
0.04x-20+8.8=0
We add all the numbers together, and all the variables
0.04x-11.2=0
We move all terms containing x to the left, all other terms to the right
0.04x=11.2
x=11.2/0.04
x=280+-1.7763568394003E-15/0.04
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