a) 14x - 9x = 1255x = 125x = 125/5x = 25
Ответ: x = 25
b) 13x + 5x = 108/218x = 54x = 54/18x = 3
Ответ: x = 3
a) 14x - 9x = 125
5x = 125
x = 125/5
x = 25
Ответ: x = 25
b) 13x + 5x = 108/2
18x = 54
x = 54/18
x = 3
Ответ: x = 3