а) 40:(-5-3) = 40:(-8) = -5
б) 13,8×1,6-13,8×3/5 = 22,08 - 8,28 = 13,8
в) 57:3целых6/17-17,8+1 = 57:(36/17)-17,8+1 = 57:(18/17) - 17,8 + 1 = 57(17/18) - 17,8 + 1 = 53 - 17,8 + 1 = 36,2
а) 40:(-5-3) = 40:(-8) = -5
б) 13,8×1,6-13,8×3/5 = 22,08 - 8,28 = 13,8
в) 57:3целых6/17-17,8+1 = 57:(36/17)-17,8+1 = 57:(18/17) - 17,8 + 1 = 57(17/18) - 17,8 + 1 = 53 - 17,8 + 1 = 36,2