Răspuns
a) (x+y)/y = 11/8;
b) x/(y -x) = 3/5;
c) x/3y = 1/8;
d) (8x + 3y)/9y = 2/3
Explicație pas cu pas:
x/y = 3/8 = x/3 = y/8 = k;
x = 3.k; y = 8k;
a) (x+y)/y = (3k + 8k)/8k = 11k/8 = 11/8;
b) x/(y -x) = 3k/(8k-3k)= 3k/5k = 3/5;
c) x/3y = 3k/24k = 1/8;
d) (8x + 3y)/9y = (24k + 24k)/72k = 48k/72k = 2/3