а/ (1,7+2)х4 = (3,7)х4 = 14,8
б/ (5,3+1,4)х3 = (6,7)х3 = 20,1
в/ (6,15+3,5)х5 = (9,65)х5 = 48,25
г/ 1,5х20 = 30
д/ 0,7х40 = 28
ж/ 3,6х70 = 252
а/ (1,7+2)х4 = (3,7)х4 = 14,8
б/ (5,3+1,4)х3 = (6,7)х3 = 20,1
в/ (6,15+3,5)х5 = (9,65)х5 = 48,25
г/ 1,5х20 = 30
д/ 0,7х40 = 28
ж/ 3,6х70 = 252