Răspuns :

Roberto12242id

Răspuns:

a)5/3+1/4=6/4

b)3/5+5/4=8/5

c)7/10+4/15=11/15

d)10/9+1/12=11/12

e)3/20+11/8=14/20

f)5/12+11/16=16/16

sper ca te am ajutat!!

Ella4521id

Explicație pas cu pas:

a. 5/3+1/4=5×4/3×4+1×3/3×3=

=20/12+3/12=23/12

B. 3/5+3/4=3×4/3×5+3×5/4×5=

=12/20+15/20=17/20

c. 7/10+4/15=21/30+8/30=29/30

d. 10/9+1/12=40/36+3/36=43/36

E. 3/20+11/8=6/40+55/40=61/40

f. 5/12+11/16=20/48+33/48=53/48

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