Evaluate
-\frac{y}{x}-\frac{13}{3}
Expand
-\frac{y}{x}-\frac{13}{3}
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\frac{-\left(4x-5y\right)-\left(9x+8y\right)}{3x}
Since -\frac{4x-5y}{3x} and \frac{9x+8y}{3x} have the same denominator, subtract them by subtracting their numerators.
\frac{-4x+5y-9x-8y}{3x}
Do the multiplications in -\left(4x-5y\right)-\left(9x+8y\right).
\frac{-13x-3y}{3x}
Combine like terms in -4x+5y-9x-8y.
\frac{-\left(4x-5y\right)-\left(9x+8y\right)}{3x}
Since -\frac{4x-5y}{3x} and \frac{9x+8y}{3x} have the same denominator, subtract them by subtracting their numerators.
\frac{-4x+5y-9x-8y}{3x}
Do the multiplications in -\left(4x-5y\right)-\left(9x+8y\right).
\frac{-13x-3y}{3x}
Combine like terms in -4x+5y-9x-8y.
Examples
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Simultaneous equation
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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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