\({9 \over 8x}-{2 \over 8x}={7 \over 8x}\)

\({7 \over p}+{4 \over 8p}={56 \over 8p}+{4 \over 8p}={60 \over 8p}={15 \over 2p}\)

\({3 \over 4a}-{7 \over 8b}={6b \over 8ab}-{7a \over 8ab}={6b-7a \over 8ab}\)

\(9-{8 \over 7a}={9 \over 1}-{8 \over 7a}={63a \over 7a}-{8 \over 7a}={63a-8 \over 7a}\)

\(8x-{5 \over 4x}={8x \over 1}⋅{4x \over 4x}-{5 \over 4x}={32x^2 \over 4x}-{5 \over 4x}={32x^2-5 \over 4x}\)

\({6x \over y}+{4 \over 5y}={30x \over 5y}+{4 \over 5y}={30x+4 \over 5y}\)

\({6y \over 8x}+{4x \over 2y}={6y^2 \over 8xy}+{16x^2 \over 8xy}={16x^2+6y^2 \over 8xy}={8x^2+3y^2 \over 4xy}\)

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

\({a \over 6a}={1 \over 6}\)

\({-10a \over 25a}=-\frac{2}{5}\)

\({-24p \over 3p}=-8\)

\({4xy \over 18xz}={2y \over 9z}\)

\({-6y \over 16xy}=-{3 \over 8x}\)

\({30abc \over 5bc}=6a\)

\({5ab \over b}+{4ac \over c}=5a+4a=9a\)

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

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

\(-{8 \over 7}⋅x=-{8x \over 7}\)

\({3 \over p}:{7 \over q}={3 \over p}⋅{q \over 7}={3q \over 7p}\)

\(-{4 \over 3}:a=-{4 \over 3}:{a \over 1}=-{4 \over 3}⋅{1 \over a}=-{4 \over 3a}\)

\({a \over 6}+{a-4 \over 7}={7a \over 42}+{6(a-4) \over 42}={7a+6(a-4) \over 42}={13a-24 \over 42}\)