Question

11х+45+х=81
По математике ​

Answer 1

12x + 45 = 81
12x = 81 - 45
12x = 36
x = 36/12
x = 3

Answer 2

11х+45+х=81

12x + 45 = 81
12x = 81 - 45
12x = 36
x = 36/12
x = 3