Evaluate
-\frac{20}{7}\approx -2.857142857
Factor
-\frac{20}{7} = -2\frac{6}{7} = -2.857142857142857
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\frac{4\left(-5\right)}{7}
Express \frac{4}{7}\left(-5\right) as a single fraction.
\frac{-20}{7}
Multiply 4 and -5 to get -20.
-\frac{20}{7}
Fraction \frac{-20}{7} can be rewritten as -\frac{20}{7} by extracting the negative sign.
Examples
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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
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Limits
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