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20x+0.45(70)=49.5
We move all terms to the left:
20x+0.45(70)-(49.5)=0
We add all the numbers together, and all the variables
20x-49.043=0
We move all terms containing x to the left, all other terms to the right
20x=49.043
x=49.043/20
x=2+8.6701821668265/19.175455417066
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