\(6 ⋅ -8 x = -48 x\)

\(3 a ⋅ 6 b = 18 a b\)

\(-3 p ⋅ -q = 3 p q\)

\(-5 a ⋅ -8 a = 40 a^{2}\)

\(-3 x ⋅ -5 y ⋅ z = 15 x y z\)

\(x ⋅ -5 y ⋅ 4 x = -20 x^{2} y\)

\(7 a + a = 8 a\)

\(5 p q + 2 p q = 7 p q\)

\(5 x + 8 x + 3 x = 16 x\)

Kan niet korter.

Kan niet korter.

\(4 a ⋅ 0 = 0\)

\(-7 x ⋅ -3 x y = 21 x^{2} y\)

\(-5 b ⋅ 1 ⋅ 4 a b = -20 a b^{2}\)

\(p + p + p + p + p + p + p + p = 8 p\)

\(6 a - 3 a = 3 a\)

\(-4 x - x = -5 x\)

\(-9 x y - 6 x y = -15 x y\)

\(7 p + 0 = 7 p\)

\(-5 a + 5 a = 0\)

\(-5 x + 2 y - 7 x = -12 x + 2 y\)

\(-4 p + 3 q + 5 q = -4 p + 8 q\)

\(-7 x + 9 y - 6 x - 2 y = -13 x + 7 y\)

\(4 a - 7 - 9 a + 1 = -5 a - 6\)

\(9 a + -6 b + 7 a = 16 a - 6 b\)

\(4 a - -5 a - 3 b = 9 a - 3 b\)

\(4 a + 6 a b + b + 9 a b = 4 a + b + 15 a b\)

\(-5 p q + 3 q + 6 p q - 3 q = p q\)