Question

ma poate ajuta cineva?
DAU COROANA!​

Answer 1

Răspuns:

a) 21

b) 33

c) 51

d) 91

Answer 2

a) 3 1/2 + 1 3/4= (3+1)+(1/2+3/4)=4+(1/2+3/4)= 4+5/4=4+1 1/4=4+1+1/4=5+1/4=5 1/4

b) 2 2/3+2 5/6= (2+2)+(2/3+5/6)=4+(2/3+5/6)= 4+3/2=4+1 1/2= 4+1+1/2= 5+1/2= 5 1/2

c) 2 3/4+3 5/8= (2+3)+(3/4+5/8)= 5+(3/4+5/8)=5+11/8=5+1 3/8=5+1+3/8=6+3/8=6 3/8

d) 5 5/6+1 3/4= (5+1)+(5/6+3/4)= 6+(5/6+3/4)= 6+19/12=6+1 7/12= 6+1+7/12=7+7/12= 7 7/12

e) 4 7/10+3 1/4= (4+3)+(7/10+1/4)= 7+(7/10+1/4)= 7+19/20= 7 19/20

f) 6 7/9+ 2 5/6= (6+2)+(7/9+5/6)= 8+(7/9+5/6)= 8+29/18= 8+1 11/18= 8+1+11/18= 9+11/18= 9 11/18