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\frac{x-y-8}{3}
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\frac{x-y-8}{3}
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\frac{x-\left(8+y\right)}{3}
Since \frac{x}{3} and \frac{8+y}{3} have the same denominator, subtract them by subtracting their numerators.
\frac{x-8-y}{3}
Do the multiplications in x-\left(8+y\right).
\frac{x-\left(8+y\right)}{3}
Since \frac{x}{3} and \frac{8+y}{3} have the same denominator, subtract them by subtracting their numerators.
\frac{x-8-y}{3}
Do the multiplications in x-\left(8+y\right).
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