Solve for x
x = \frac{39}{2} = 19\frac{1}{2} = 19.5
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2x+4-3=40
Combine x and x to get 2x.
2x+1=40
Subtract 3 from 4 to get 1.
2x=40-1
Subtract 1 from both sides.
2x=39
Subtract 1 from 40 to get 39.
x=\frac{39}{2}
Divide both sides by 2.
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