Решение задачи #74997

a) 19m22dm + 46m39dm - 18m73dm = 83m + 134dm = 83m + 13m + 4dm = 96m 4dm

б) (31m75dm + 24m46dm)*4 = (55m + 121dm) * 4 = 220m + 484dm = 220m + 48m + 4dm = 268m 4dm