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\frac{xn}{2n}-\frac{2\left(x-1\right)}{2n}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 2 and n is 2n. Multiply \frac{x}{2} times \frac{n}{n}. Multiply \frac{x-1}{n} times \frac{2}{2}.
\frac{xn-2\left(x-1\right)}{2n}
Since \frac{xn}{2n} and \frac{2\left(x-1\right)}{2n} have the same denominator, subtract them by subtracting their numerators.
\frac{xn-2x+2}{2n}
Do the multiplications in xn-2\left(x-1\right).
\frac{xn}{2n}-\frac{2\left(x-1\right)}{2n}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 2 and n is 2n. Multiply \frac{x}{2} times \frac{n}{n}. Multiply \frac{x-1}{n} times \frac{2}{2}.
\frac{xn-2\left(x-1\right)}{2n}
Since \frac{xn}{2n} and \frac{2\left(x-1\right)}{2n} have the same denominator, subtract them by subtracting their numerators.
\frac{xn-2x+2}{2n}
Do the multiplications in xn-2\left(x-1\right).