\({6 \over 9x}+{5 \over 9x}={11 \over 9x}\)

\({8 \over p}-{5 \over 2p}={16 \over 2p}-{5 \over 2p}={11 \over 2p}\)

\({7 \over 4a}-{9 \over 6b}={21b \over 12ab}-{18a \over 12ab}={21b-18a \over 12ab}={7b-6a \over 4ab}\)

\(7+{5 \over 9a}={7 \over 1}+{5 \over 9a}={63a \over 9a}+{5 \over 9a}={63a+5 \over 9a}\)

\({3x \over y}-{2 \over 9y}={27x \over 9y}-{2 \over 9y}={27x-2 \over 9y}\)

\({2a \over a}={2 \over 1}=2\)

\({p \over 9p}={1 \over 9}\)

\({-4x \over -14x}=\frac{2}{7}\)

\({9a \over -3a}=-3\)

\({9xy \over -24xz}=-{3y \over 8z}\)

\({16b \over -28ab}=-{4 \over 7a}\)

\({12xyz \over -2yz}=-6x\)

\({4xy \over y}-{3xz \over z}=4x-3x=x\)

\(7x+{5 \over 6x}={7x \over 1}⋅{6x \over 6x}+{5 \over 6x}={42x^2 \over 6x}+{5 \over 6x}={42x^2+5 \over 6x}\)

\({5q \over 4p}+{2p \over 3q}={15q^2 \over 12pq}+{8p^2 \over 12pq}={8p^2+15q^2 \over 12pq}\)

\({5 \over a}⋅-{8 \over b}=-{40 \over ab}\)

\({a \over 9}⋅{3 \over b}={3a \over 9b}={a \over 3b}\)

\({5 \over 8}⋅x={5x \over 8}\)

\({7y \over x}⋅{x+2 \over 3}={7y(x+2) \over 3x}={7xy+14y \over 3x}\)

\({5 \over p}:{6 \over q}={5 \over p}⋅{q \over 6}={5q \over 6p}\)

\(-{9 \over 7}:a=-{9 \over 7}:{a \over 1}=-{9 \over 7}⋅{1 \over a}=-{9 \over 7a}\)

\({2 \over 9}:{x-4y \over y}={2 \over 9}⋅{y \over x-4y}={2y \over 9(x-4y)}={2y \over 9x-36y}\)

\({2a \over 5}+{a-3 \over 6}={12a \over 30}+{5(a-3) \over 30}={12a+5(a-3) \over 30}={17a-15 \over 30}\)