Solve for x
x=-\frac{5}{7}\approx -0.714285714
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7x=2-7
Subtract 7 from both sides.
7x=-5
Subtract 7 from 2 to get -5.
x=\frac{-5}{7}
Divide both sides by 7.
x=-\frac{5}{7}
Fraction \frac{-5}{7} can be rewritten as -\frac{5}{7} by extracting the negative sign.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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