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(7.5-x)/1=x
We move all terms to the left:
(7.5-x)/1-(x)=0
We add all the numbers together, and all the variables
(-1x+7.5)/1-x=0
We add all the numbers together, and all the variables
-1x+(-1x+7.5)/1=0
We multiply all the terms by the denominator
-1x*1+(-1x+7.5)=0
Wy multiply elements
-1x+(-1x+7.5)=0
We get rid of parentheses
-1x-1x+7.5=0
We add all the numbers together, and all the variables
-2x+7.5=0
We move all terms containing x to the left, all other terms to the right
-2x=-7.5
x=-7.5/-2
x=3+1/1.3333333333333
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