tolong dijawab dengan penyelesaiannya

( 3x-7 / 5 ) - ( y+5 / 3 ) = 3

3(3x - 7) - 5 ( y + 5)
----------------------------- = 3
( 5 ) ( 3 )

9x - 21 - 5y - 25
------------------------ = 3
15

9x - 5y - 46 = 3 • 15
9x - 5y = 45 + 46
9x - 5y = 91 ... pers 1

( x-5 / 4 ) + ( 2y+10 / 3 ) = 3

3 ( x - 5) + 4 ( 2y + 10)
-------------------------------- = 3
( 4 )( 3)

3x - 15 + 8y + 40
------------------------ = 3
12

3x + 8y + 25 = 3 • 12
3x + 8y = 36 - 25
3x + 8y = 11 ... pers 2

pers 1 & 2
9x - 5y = 91
3x + 8y = 11 |×3
maka
9x - 5y = 91
9x + 24y = 33
---------------------(-)
- 29y = 58
y = - 2
subtitusi
9x - 5y = 91
9x - 5(-2) = 91
9x + 10 = 91
9x = 91 - 10
9x = 81
x = 9

jadi x = 9 dan y = - 2 ( B )