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2x-\left(24-x\right)=80
Multiply both sides of the equation by 2.
2x-24-\left(-x\right)=80
To find the opposite of 24-x, find the opposite of each term.
2x-24+x=80
The opposite of -x is x.
3x-24=80
Combine 2x and x to get 3x.
3x=80+24
Add 24 to both sides.
3x=104
Add 80 and 24 to get 104.
x=\frac{104}{3}
Divide both sides by 3.