Solve for x
x = \frac{13}{2} = 6\frac{1}{2} = 6.5
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2x=9+4
Add 4 to both sides.
2x=13
Add 9 and 4 to get 13.
x=\frac{13}{2}
Divide both sides by 2.
Examples
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Linear equation
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Matrix
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Limits
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