\({6 \over 2x}-{5 \over 2x}={1 \over 2x}\)

\({8 \over x}+{4 \over 5x}={40 \over 5x}+{4 \over 5x}={44 \over 5x}\)

\({8 \over 9a}+{6 \over 3b}={8b \over 9ab}+{18a \over 9ab}={8b+18a \over 9ab}\)

\(5+{4 \over 9a}={5 \over 1}+{4 \over 9a}={45a \over 9a}+{4 \over 9a}={45a+4 \over 9a}\)

\(3p-{5 \over 6p}={3p \over 1}⋅{6p \over 6p}-{5 \over 6p}={18p^2 \over 6p}-{5 \over 6p}={18p^2-5 \over 6p}\)

\({9a \over b}+{5 \over 7b}={63a \over 7b}+{5 \over 7b}={63a+5 \over 7b}\)

\({6y \over 3x}+{9x \over 5y}={30y^2 \over 15xy}+{27x^2 \over 15xy}={27x^2+30y^2 \over 15xy}={9x^2+10y^2 \over 5xy}\)

\({3p \over p}={3 \over 1}=3\)

\({x \over 3x}={1 \over 3}\)

\({12a \over 27a}=\frac{4}{9}\)

\({18a \over -3a}=-6\)

\({-25xy \over 30xz}=-{5y \over 6z}\)

\({-20q \over 24pq}=-{5 \over 6p}\)

\({25xyz \over -5yz}=-5x\)

\({5ab \over b}-{6ac \over c}=5a-6a=-a\)

\({3 \over p}⋅{4 \over q}={12 \over pq}\)

\({x \over 4}⋅{8 \over y}={8x \over 4y}={2x \over y}\)

\({6 \over 5}⋅a={6a \over 5}\)

\({7 \over x}:{9 \over y}={7 \over x}⋅{y \over 9}={7y \over 9x}\)

\({8 \over 9}:a={8 \over 9}:{a \over 1}={8 \over 9}⋅{1 \over a}={8 \over 9a}\)

\({9x \over 8}+{x+5 \over 3}={27x \over 24}+{8(x+5) \over 24}={27x+8(x+5) \over 24}={35x+40 \over 24}\)

\({1 \over 7}:{x-3y \over y}={1 \over 7}⋅{y \over x-3y}={y \over 7(x-3y)}={y \over 7x-21y}\)

\({-7x-4 \over 2x-5}-6={-7x-4 \over 2x-5}-{6(2x-5) \over 2x-5}={-7x-4-6(2x-5) \over 2x-5}={-7x-4-12x+30 \over 2x-5}={-19x+26 \over 2x-5}\)