Question

Помогите пожалуйста номер 2

Answer 1

2)

1)
a.(45+17) = 5.45 + 5.17
a.(62) = 5.(45 + 17)
a(62) = 5(62)
a(62)/62 = 5(62)/62
a = 5

a.(45 + 17) = 5.45 + 5.17
a.(45 + 17) = 5.(45 + 17)
a.(45 + 17)/(45 + 17) = 5.(45 + 17)/(45+17)
a = 5

2)
5.a + 4.a = 9.18
9.a = 9.18
(9.a)/9 = (9.18)/9
a = 18

3)

22.a + 18.a = (22 + 18) .2.3
40.a = 40.6
(40.a)/40 = (40.6)/40
a = 6

22.a + 18.a = (22 + 18) .2.3
a.(22 + 18) = (22 + 18) .6
a.(22 + 18)/(22 + 18) = ((22+18).6)/(22+18)
a = 6