Решите уравнения : 1) 2x+ 17 = 22 + 3x 2) 25 - 4x = 12 - 5x 3) 21x + 45x = 17 + 14x 4) 13x + 70 = 2x = 15
1) 2х-3х=5 х=-5 2) -4х+5х=12-25 х=-13 3) 66х-14х=17 52х=17 х=3 4) 11х=-55 х=-5