Question

12x+15x = 135

Tìm x

Answer 1

12x+15x= 135

(12+15)x = 135

27x = 135

x= 135:27

x=5

Answer 2

12x + 15x = 135

12+15x = 135

27x=135

x=135:27

x=5

Answer 3

12x + 15x = 135

12 + 15x = 145

27x = 135

x = 135 : 27

x = 5

Answer 4

ta có

12x + 15x =135

12 + 15x = 135

27x =135

x = 135:27

x =  5

      đ/s : 5