4(х+у-7) = 4х + 4у - 288(2а+5b-3) = 16a + 40b - 24(2x-3y+5)×2 = 4x - 6y + 10(13b-2c-3)×5 = 65b - 10c - 15
4(х+у-7) = 4х + 4у - 28
8(2а+5b-3) = 16a + 40b - 24
(2x-3y+5)×2 = 4x - 6y + 10
(13b-2c-3)×5 = 65b - 10c - 15