а) 14x - 9x = 125x = 12x = 125 / x = 25
б) 15y + 25y = 1240y = 12y = 120 / 4y = 3
в) 13x + 5x = 108 / 18x = 5x = 54 / 1x = 3
г) 29y - 17y = 12 * 12y = 4y = 48 / 1y = 4
а) 14x - 9x = 12
5x = 12
x = 125 /
x = 25
б) 15y + 25y = 12
40y = 12
y = 120 / 4
y = 3
в) 13x + 5x = 108 /
18x = 5
x = 54 / 1
x = 3
г) 29y - 17y = 12 *
12y = 4
y = 48 / 1
y = 4