\({3 \over 7x}+{2 \over 7x}={5 \over 7x}\)

\({3 \over p}-{7 \over 6p}={18 \over 6p}-{7 \over 6p}={11 \over 6p}\)

\({5 \over 7a}-{8 \over 9b}={45b \over 63ab}-{56a \over 63ab}={45b-56a \over 63ab}\)

\(2-{7 \over 8a}={2 \over 1}-{7 \over 8a}={16a \over 8a}-{7 \over 8a}={16a-7 \over 8a}\)

\(6x-{9 \over 8x}={6x \over 1}⋅{8x \over 8x}-{9 \over 8x}={48x^2 \over 8x}-{9 \over 8x}={48x^2-9 \over 8x}\)

\({4x \over y}-{9 \over 6y}={24x \over 6y}-{9 \over 6y}={24x-9 \over 6y}={8x-3 \over 2y}\)

\({8q \over 2p}+{4p \over 5q}={40q^2 \over 10pq}+{8p^2 \over 10pq}={8p^2+40q^2 \over 10pq}={4p^2+20q^2 \over 5pq}\)

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

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

\({-10x \over 14x}=-\frac{5}{7}\)

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

\({6ab \over 16ac}={3b \over 8c}\)

\({-15y \over -18xy}={5 \over 6x}\)

\({-10xyz \over 5yz}=-2x\)

\({5pq \over q}+{6pr \over r}=5p+6p=11p\)

\({5 \over a}⋅{6 \over b}={30 \over ab}\)

\({p \over 6}⋅-{7 \over q}=-{7p \over 6q}\)

\({8 \over 5}⋅a={8a \over 5}\)

\({4 \over x}:{5 \over y}={4 \over x}⋅{y \over 5}={4y \over 5x}\)

\(-{3 \over 2}:x=-{3 \over 2}:{x \over 1}=-{3 \over 2}⋅{1 \over x}=-{3 \over 2x}\)