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0.2(x+40)-0.08(x-30)=14
We move all terms to the left:
0.2(x+40)-0.08(x-30)-(14)=0
We multiply parentheses
0.2x-0.08x+8+2.4-14=0
We add all the numbers together, and all the variables
0.12x-3.6=0
We move all terms containing x to the left, all other terms to the right
0.12x=3.6
x=3.6/0.12
x=30+4.4408920985006E-16/0.12
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