Question

15. 7(y + 3) - 2(x+2) = 14,
4(y-2) + 3(x - 3) = 2​

Answer 1

Step-by-step explanation:

7(y+3)-2(x+2)=14. =>7y+21- 2x-4=14. =>7y+17-2x=14. =>7y-2x=14-17. => 7y-2x=-3 ------1st equation. 4(y-2)+3(x-3)=2.

Answer 2

Answer:

7(y+3) - 2(x+2) = 14

7y + 21 - 2x - 4 = 14

2x -7y = 3 ______(1)

4(y-2) +3(x-3) = 2

4y - 4 + 3x - 9 = 2

3x + 4y = 19 ______(2)

by using substitution method :-

3x + 4y = 19___*7

21x + 28y = 133___(3)

2x - 7y = 3___*4

8x - 28y = 12 ____(4)

21x + 28y = 133

8x - 28y = 12

_________________

29x = 145

x = 5

putting the value of x in equ 1

2x - 7y = 3

2(5) - 7y = 3

10 - 7y = 3

7y = 10 - 3

7y = 7

y = 1