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2.5x-2=21/2
We move all terms to the left:
2.5x-2-(21/2)=0
We add all the numbers together, and all the variables
2.5x-2-(+21/2)=0
We get rid of parentheses
2.5x-2-21/2=0
We multiply all the terms by the denominator
(2.5x)*2-21-2*2=0
We add all the numbers together, and all the variables
(+2.5x)*2-21-2*2=0
We add all the numbers together, and all the variables
(+2.5x)*2-25=0
We multiply parentheses
4x-25=0
We move all terms containing x to the left, all other terms to the right
4x=25
x=25/4
x=6+1/4
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