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0.4x=5/2
We move all terms to the left:
0.4x-(5/2)=0
We add all the numbers together, and all the variables
0.4x-(+5/2)=0
We get rid of parentheses
0.4x-5/2=0
We multiply all the terms by the denominator
(0.4x)*2-5=0
We add all the numbers together, and all the variables
(+0.4x)*2-5=0
We multiply parentheses
0x-5=0
We add all the numbers together, and all the variables
x-5=0
We move all terms containing x to the left, all other terms to the right
x=5
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