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`{:(3x-5y=4),(9x-2y=7):}`

8x+5y=9 3x+2y=4

3x-5y-4=0 and 9x=2y+7

Solve:- 3x-5y-4=0, 9x=2y+7

If x:y =2 :3 then the value of {:(3x+2y)/(9x+5y):} will be:

3x+2y=4 ; & 8x+5y=9

Evaluate : (viii) (3x + 4y) (3x -4y) (9x^2 + 16y^2)

If 7x - 15y = 4x + y , find the value of x: y . Hence, use componendo and dividendo to find the values of : (i) (9x + 5y)/(9x - 5y) (iI) (3x^(2) + 2y^(2))/(3x^(2) - 2y^(2))