Question

Tolong bantu yaa ini susah bangett .. dikumpulin besok soalnya

Answer 1

Verified answer

1/x+1 - 1/y-1=1/4
samakan penyebutnya
y-1-(x+1) / (x+1)(y-1) =1/4
y-1-x-1=1
y-x-2=1
y-x=3
2/x+1 + 1/y-1 =3/4
2(y-1)+x+1 /(x+1)(y-1) =3/4
2y+x-1=3
2y+x=4
y-x=3
eliminasi x(penjumlahan)
3y=7
y=7/3
y-x=3
7/3-x=3
x=7/3 - 3=-2/3