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19.15+x(0.07)=23
We move all terms to the left:
19.15+x(0.07)-(23)=0
We add all the numbers together, and all the variables
x(0.07)-3.85=0
We multiply parentheses
0.07x-3.85=0
We move all terms containing x to the left, all other terms to the right
0.07x=3.85
x=3.85/0.07
x=54+0.07/0.07
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