1. Решите уравнение: A
2x + 13 = 22 + 3x
3х+(10-9х)=22х
21х+45=15+14х
13х+40=2х+7
25-(7-2х)=5х
В 3x - 1 = 2(x - 2)
3(x + 5) = 7 - 5x
19(y - 9) = 3(y - 8)
4(x - 9) = 3(x - 8)
3(2x - 9) = 5(x - 4) 2. Решите уравнение, используя основное стойство пропорции: А (0, 25)/(4x + 1) = (0, 3)/(8, 4) 4/(1, 6) = (7x - 2)/(10, 4) (3x + 0, 8)/(9, 6) = (4, 8)/(3, 6) 8/20 = 28/(9x + 27) 9/10 = 63/(5(x + 8)) (8x + 5, 2)/(2, 4) = 11/2 (x - 0, 2)/(0, 8) = (4, 2)/(1, 2) (5x + 3)/9 = 27/13.5 5/14 = 1/(2(x + 31)) (x + 7)/16 = 32/(25, 6) 1, 2. 3.​