Răspuns:
Explicație pas cu pas:
a) 2/5 + 3/10 = (4+3)/10 = 7/10
b) 2/9+2/3 = (2+6)/9 = 8/9
c) 3/4+5/8 = (6+5)/8 = 11/8
d) 7/8+1/2 = (7+4)/8 = 11/8
e) 1/2+1/4 = (2+1)/4 = 3/4
f) 3/10+2/5 = (3+4)/10 = 7/10
g) 1/6+2/3 = (1+4)/6 = 5/6
h) 3/5+1/20 = (12+1)/20 = 13/20
/ - fractie.
