а) 14x - 9x = 1255x = 125x = 125 / 5x = 25
б) 15y + 25y = 12040y = 120y = 120 / 40y = 3
в) 13x + 5x = 108 / 218x = 54x = 54 / 18x = 3
г) 29y - 17y = 12 * 412y = 48y = 48 / 12y = 4
а) 14x - 9x = 125
5x = 125
x = 125 / 5
x = 25
б) 15y + 25y = 120
40y = 120
y = 120 / 40
y = 3
в) 13x + 5x = 108 / 2
18x = 54
x = 54 / 18
x = 3
г) 29y - 17y = 12 * 4
12y = 48
y = 48 / 12
y = 4