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20=5-0.25x
We move all terms to the left:
20-(5-0.25x)=0
We add all the numbers together, and all the variables
-(-0.25x+5)+20=0
We get rid of parentheses
0.25x-5+20=0
We add all the numbers together, and all the variables
0.25x+15=0
We move all terms containing x to the left, all other terms to the right
0.25x=-15
x=-15/0.25
x=-60
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