Solve for x
x = \frac{9}{7} = 1\frac{2}{7} \approx 1.285714286
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-7x=-5-4
Subtract 4 from both sides.
-7x=-9
Subtract 4 from -5 to get -9.
x=\frac{-9}{-7}
Divide both sides by -7.
x=\frac{9}{7}
Fraction \frac{-9}{-7} can be simplified to \frac{9}{7} by removing the negative sign from both the numerator and the denominator.
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
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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