РЕШИ УРАВНЕНИЯ

Привет! Давай решим эти уравнения по столбикам. ### Первый столбик - 72 + b = 99; b = 99 - 72; **b = 27** - b - 3 = 18; b = 18 + 3; **b = 21** - b : 6 = 3; b = 3 * 6; **b = 18** - 10 * b = 60; b = 60 / 10; **b = 6** - b + 21 = 95; b = 95 - 21; **b = 74** - 12 + d = 81; d = 81 - 12; **d = 69** - 3 * d = 18; d = 18 / 3; **d = 6** - d - 10 = 83; d = 83 + 10; **d = 93** - d + 34 = 93; d = 93 - 34; **d = 59** - 4 : d = 2; d = 4 / 2; **d = 2** ### Второй столбик - c * 10 = 20; c = 20 / 10; **c = 2** - 88 - c = 5; c = 88 - 5; **c = 83** - c : 4 = 10; c = 10 * 4; **c = 40** - 56 : c = 8; c = 56 / 8; **c = 7** - 4 * c = 20; c = 20 / 4; **c = 5** - b + 48 = 90; b = 90 - 48; **b = 42** - b * 10 = 70; b = 70 / 10; **b = 7** - 60 - b = 43; b = 60 - 43; **b = 17** - 51 + b = 62; b = 62 - 51; **b = 11** - b : 5 = 4; b = 4 * 5; **b = 20** ### Третий столбик - 4 * d = 16; d = 16 / 4; **d = 4** - d + 34 = 77; d = 77 - 34; **d = 43** - 48 : d = 8; d = 48 / 8; **d = 6** - d - 21 = 63; d = 63 + 21; **d = 84** - 25 - d = 21; d = 25 - 21; **d = 4** - 62 - c = 23; c = 62 - 23; **c = 39** - c - 14 = 42; c = 42 + 14; **c = 56** - c * 5 = 25; c = 25 / 5; **c = 5** - 41 + c = 94; c = 94 - 41; **c = 53** - c : 4 = 10; c = 10 * 4; **c = 40**