Ребят прошу помогите скорей

1) 3x-y=2 и 2x+2y=5

2) 3x-5y=4 и 2x+6y=3

3) 4x+3y=2 и 5x-2y=3

1)

3x-y=2

2x+2y=5

y=3x - 2

2x+2 (3x - 2) = 5

y=3x - 2

2x + 6x - 4 = 5

y=3x - 2

8x=9

y=3x - 2

x = 9/8

y=3 * 9/8 - 2

x = 9/8

y = 11/8

x = 9/8

Проверка

3 * 9/8 - 11/8 = 2

27/8 - 11/8 = 2

16/8 = 2

2=2

2)

3x-5y=4

2x+6y=3

5x + y = 7

2x + 6y = 3

y = 7 - 5x

2x + 6y = 3

y = 7 - 5x

2x + 6 (7-5x) = 3

y = 7 - 5x

2x + 42 - 30x = 3

y = 7 - 5x

42 - 3 = 30x - 2x

y = 7 - 5x

28x = 39

y = 7 - 5x

x = 39/28

y = 7 - 5 * 39/28

x = 39/28

y = 196/28 - 195/28

x = 39/28

y=1/28

x=39/28

Проверка

3 * 39/28 - 5 * 1/28 = 4

117/28 - 5/28 = 4

112/28 = 4

4 = 4

3)

4x+3y=2

5x-2y=3

9x + y = 5

5x - 2y = 3

y = 5 - 9x

5x - 2 * (5 - 9x) = 3

y = 5 - 9x

5x - 10 + 18x = 3

y = 5 - 9x

23x = 3 + 10

y = 5 - 9x

23x = 13

y = 5 - 9x

x=13/23

y = 5 - 9 * 13/23

x = 13/23

y = 115/23 - 117/23

x = 13/23

y = - 2/23

x = 13/23

Проверка

4 * 13/23 + 3 * (-2/23) = 2

52/23 - 6/23 = 2

46/23=2

2=2