2 2/3 : (y+1/3)=1 1/2 : (y-1 1/8)

Question

2 2/3 : (y+1/3)=1 1/2 : (y-1 1/8)

Answer 1

2 2/3 : (y+1/3)=1 1/2 : (y-1 1/8)
2 2/3(y-1 1/8)=1 1/2 (y+1/3)
8/3(y-9/8)=3/2 (y+1/3) умножим на 6
16(y-9/8)=9 (y+1/3)
16у-16*9/8=9у+9*1/3
16у-18=9у+3
16у-9у=3+18
7у=21
у=21/3=7