If `3x-5y=5` and `x/(x+y)=5/7` , then what is the value of `2x y` is (a) 3 (b) 4 (c) 6 (d) 9 (e) None of these

If (x+y)=3 , x y=2 , then what is the value of x^3+y^3 ? (a) 6 (b) 7 (c) 8 (d) 9 (e) None of these

If 3x+7y=75 and 5x-5y=25, then what is the value of x+y?(a)14(b)15 (c) 16 (d) 17 (e) None of these

If 2x+y=17;y+2z=15 and x+y=9 then what is the value of 4x+3y+z?(a)41 (b) 43(c)45 (d) 55 (e) None of these

If 2x+y=5 and 3x-4y=2, then the value of 2xy is (a) 4 (b) 6 (c) 8 (d) 10

If 3x-4y+z=7; 2x-z+3y=19 ; x+2y+2z=24 , then what is the value of z ? (a) 4 (b) 5 (c) 6 (d) 8

If x-y=1 and x^(2)+y^(2)=41, then the value of x+y will be (a)5 or 4(b)-5 or -4 (c) +-9(d)+-1

If 3x+ 4y-11 = 18 and 8x- 6y +12 = 6, then what is the value of 5x- 3y - 9?

If 3 x + 4y - 11= 18 and 8x - 6y + 12 = 6 , then what is the value of 5x - 3y - 9 ?

If (i) 4x+5y=83 and (3x)/(2y)=(21)/(22), then what is the value of y-x? (ii) (x)/(4)-(x-3)/(6)=1 then find the value of x.