\(2 ⋅ 5 a = 10 a\)

\(8 x ⋅ 4 y = 32 x y\)

\(-3 a ⋅ -2 b = 6 a b\)

\(-8 p ⋅ -4 p = 32 p^{2}\)

\(3 x ⋅ -5 y ⋅ 2 z = -30 x y z\)

\(5 x ⋅ -3 y ⋅ -2 x = 30 x^{2} y\)

\(3 p + p = 4 p\)

\(6 x y + 7 x y = 13 x y\)

\(3 a + 7 a + 5 a = 15 a\)

Kan niet korter.

Kan niet korter.

\(0 ⋅ 2 x = 0\)

\(9 x ⋅ 4 x y = 36 x^{2} y\)

\(-b ⋅ -4 ⋅ -2 a b = -8 a b^{2}\)

\(a + a + a + a + a + a + a + a = 8 a\)

\(8 p - 5 p = 3 p\)

\(-2 x - 8 x = -10 x\)

\(-7 a b - 4 a b = -11 a b\)

\(-6 x + 0 = -6 x\)

\(-6 a + 6 a = 0\)

\(2 a + 8 b + 6 a = 8 a + 8 b\)

\(-9 a - 5 b + 7 b = -9 a + 2 b\)

\(-8 p + 3 q + 7 p + 5 q = -p + 8 q\)

\(-9 x + 4 - 5 x + 8 = -14 x + 12\)

\(-3 x + -8 y + 6 x = 3 x - 8 y\)

\(-8 a - -5 a - 7 b = -3 a - 7 b\)

\(4 a + 3 a b - 7 b + 8 a b = 4 a - 7 b + 11 a b\)

\(3 x y - 4 y - 9 x y + 4 y = -6 x y\)