Question

Rezolva:
(9+a) *2 = 10

6*(2+a) = 18

Ofer coroana!

Answer 1

( 9 + a ) × 2 = 10

9 + a = 10 : 2

9 + a = 5

a = 5 - 9

a = - 4

6 × ( 2 + a ) = 18

2 + a = 18 : 6

2 + a = 3

a = 3 - 2

a = 1