Răspuns:
Explicație pas cu pas:
a)2 1/7+1 3/7=15/7+10/7=25/7=3 4/7
b) 1 2/5+3 1/10=7/5+31/10=(14+31)/10=45/10=9/2=4 1/2
e)5 5/6-1 1/6=(35-7)/6=28/6=14/3=4 2/3
f)4 5/18-3 1/9=73/18-28/9=(73-56)/18=17/18
g)7 1/7-4 2/3=50/7-14/3=(50×3-14×7)/21=(150-98)/21=52/21
h) 29/3-33/4=(29×4-33×3)/12=(116-99)/12=17/12=1 5/12
