Solve for x
x = \frac{9}{2} = 4\frac{1}{2} = 4.5
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x+4+x=13
Add x to both sides.
2x+4=13
Combine x and x to get 2x.
2x=13-4
Subtract 4 from both sides.
2x=9
Subtract 4 from 13 to get 9.
x=\frac{9}{2}
Divide both sides by 2.
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