Question

2x-3y = 18, 8x + 5y =77​

Answer 1

Step-by-step explanation:

question is wrong ....

real question ans is

Consider given equations

x2−y3=15             ………….(1)

x8+y5=77           ………….(2)

Let,u=x1,v=y1 then, we get

2u-3v=15          ……………..(3)

8u+5v=77          ………………(4)

From equation (3) u=215+3v put in equation (4), we get

  8×(215+3v)+5v=77

 4(15+3v)+5v=77

 60+12v=77

 v=1217

Put the value of v in equation (3).

 

  2u−3×1217=15

 2u=15+417=477

 u=877

Now,

  1/x=u,

1/y=v

1by x = 77 by 8 or 1by y = 77 by 12

so, x= 8 by 77 and y = 12 by 77

Answer 2

Answer:

the above given answer is right