Solve for x
x = \frac{16}{7} = 2\frac{2}{7} \approx 2.285714286
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7x-9=7
Add 5 and 2 to get 7.
7x=7+9
Add 9 to both sides.
7x=16
Add 7 and 9 to get 16.
x=\frac{16}{7}
Divide both sides by 7.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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