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20=15.25-0.09x
We move all terms to the left:
20-(15.25-0.09x)=0
We add all the numbers together, and all the variables
-(-0.09x+15.25)+20=0
We get rid of parentheses
0.09x-15.25+20=0
We add all the numbers together, and all the variables
0.09x+4.75=0
We move all terms containing x to the left, all other terms to the right
0.09x=-4.75
x=-4.75/0.09
x=-52+0.07/0.09
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