Question

dau coroana va roog din suflet​

Answer 1

(85 - a) x 2 = 10

85 - a = 10 : 2

85 - a = 5

a = 85 - 5

a = 80

(45 : b) : 3 = 3

45 : b = 3 x 3

45 : b = 9

b = 45 : 9

b = 5

(c : 7) : 8 = 56

c : 7 = 56 x 8

c : 7 = 448

c = 448 x 7

c = 3136

a + b + c = 80 + 5 + 3136

a + b + c = 85 + 3136

a + b + c = 3221