Упростите выражения 54x-12x-24x+15, 21×b×3×a, 11m+33n+22

Question

Упростите выражения 54x-12x-24x+15, 21×b×3×a, 11m+33n+22

Answer 1

(54-12-24)х+15
21b×3a
(11+33)m+22

Answer 2

54х-12х-24х+15=33х
21×b×3×a=(21b)×(3a)