Răspuns :

daca x/y=3/8=>8x=3y=>x/3=y/8

notam cu k; x=3k; y=8k

a)x+y/y=3k+8k/8k=11k/8k; simplificam cu k=>11/8

b)x/y-x=3k/8k-3k=3k/5k=3/5

c)x/3y=3k/3×8k; simplificam cu 3k=>1/8

d)8x+3y/9y=8×3k+3×8k/9×8k; simplificam cu 24k=>1+1/3=2/3

Sper ca te am ajutat!

ID Alte intrebari