ALGEBRA 13

If  x+3y = 1            find  ^x/y              

    x-3y     4

solution

x+3y = 1           

x-3y     4

1(x-3y) = 4(x+3y)           [after cross multiplying]

x-3y = 4x+12y

x - 4x = 12y + 3y

-3x = 15y

¹-3x = ^-515y

₁-3      -3 ₁

 x = -5y

     

x = -5y

y     y

x = -5

y    

Hence ^x/_y = -5  answer.          

TRY THIS......................

If  x+2y = 1            find  ^x/y              

    x- 2y     5