Răspuns :

Simonaioana735id

8) a) 21/4 + 61/10 = 105/20+122/20 = 227/20

b) 25/4+17/3+41/24 = 150/24+136/24+41/24=327/24

c) 29/6-9/4 = 58/12 - 27/12 = 41/12

d) 9/2-5/3 = 27/6 - 10/6 = 17/6

Răspuns:

Explicație pas cu pas:

a) 5 1/4+6 1/10=11 +1/4+1/10=11+(5+2)/20= 11 7/20

b)6 1/4+5 2/3+1 17/24+=12+1/4+2/3 +17/24=12 +(6+16+17)/24=

=12+39/24=12 13/8=13 5/8

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

d)4 1/2 -1 2/3=3+1/2-2/3=3+(3-2)/6=3 1/2

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