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" (1) "(2)/(x)-(3)/(y)=15quad ;(8)/(x)+(...

" (1) "(2)/(x)-(3)/(y)=15quad ;(8)/(x)+(5)/(y)=77

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(2)/(x)-(3)/(y)=15;-(8)/(x)-(5)/(y)=77

(2)/(x)-(3)/(y)=15,(8)/(x)+(5)/(y)=77

Solve the following simultaneous equations. (2)/(x) - (3)/(y) = 15 , (8)/(x) + (5)/(y) = 77

Solve (20)/(x + y) + (3)/(x - y) = 7 and (8)/(x - y)- (15)/(x + y) = 5 .

Solve (20)/(x + y) + (3)/(x - y) = 7 and (8)/(x - y)- (15)/(x + y) = 5 .

Solve : {:((34)/(3x+4y)+(15)/(3x-2y)=5),((25)/(3x-2y)-(8.50)/(3x+4y)=4.5):}

If (r+s)/(x-y)=(3)/(4) , then (8r+8s)/(15x-15y)=

if y=x^((1)/(2))(5-2x)^((2)/(3))(4-3x)^(-(3)/(4))(77x)^(-(4)/(5)) then the value of (((dy)/(dx))/(y)) is

Consider the lines (x-5)/(3)=(y-7)/(-16)=(z-3)/(7) and (x-9)/(3)=(y-13)/(8)=(z-15)/(-5) , then-