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25=0.9x-4.5
We move all terms to the left:
25-(0.9x-4.5)=0
We get rid of parentheses
-0.9x+4.5+25=0
We add all the numbers together, and all the variables
-0.9x+29.5=0
We move all terms containing x to the left, all other terms to the right
-0.9x=-29.5
x=-29.5/-0.9
x=32+0.7/0.9
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