Решите уравнения

1) 2x + 17 = 22 + 3x

2) 18 + 3x = x + 14

3) 25 - 4x = 12 - 5x

4) 13x + 27 = 16x + 4,5

5) 21x + 45 = 17 + 14x

6) 13x + 70 = 2x + 15

1. 2x + 17=22+3x

2 x-3 x=22-17

-1 x=5

x=5: (-1)

x=-5

2. 18+3x=x+14

3 x - x=14-18

2 x=-4

x=-4:2

x=-2

3. 25-4x=12-5x

-4 x+5 x=12-25

1 x=-13

x=-13:1

x--13

4. 13x+27=16x+4,5

13 x-16 x=4,5-27

-3 x=-22,5

x=-22,5: (-3)

x=7,5

5. 21x+45=17+14x

21 x-14 x=17-45

7 x=-28

x=-28:7

x=-4

6. 13x+70=2x+15

13 x-2 x=15-70

11 x=-55

x=-55:11

x=-5