Решите уравнения 1) 13x + 25 =12x+14;
2) 8y-13 =12y-9;
3) — 9а - 7 = -15а + 5;
4) 12-4x=-12+4r
5) 4+20y =6+18y
6) 7-2r=3r-3​

ща решим, бло

Пошаговое объяснение:

1) 13x - 12x = 14 - 25

1x = -11

x = -11

2) 8y - 12y = -9 + 13

-4y = 4

x = -1

3) -9a + 15a = 5 + 7

6a = 12

x = 2

4) -4x -4x = -12 - 12

-8x = -24

x = 3

5) 20y - 18y = 6 - 4

2y = 2

y = 1

6) -2r - 3r = -3 - 7

-5r = -10

r = 2