Задания 5! Срочно пож!​

5.

1) 38 + x =72. 4) 6 × y = 18

x = 72 - 38. y = 18 : 6

x = 34. y = 3

2) x - 31 = 45. 5) b : 7 =5

x = 45 + 31. b = 7 × 5

x = 76. b = 35

3) x × 4 = 20. 6) 36 : c = 9

x = 20 : 4. c = 36 : 9

x = 5. c = 4