Question

( 3 cale i 2/3 + 1 cala i 3/5) : na 4 = , nastepne ( 3 cale i 1/2 = 3 cale i 1/3 = 3 cale i 1/6 ) :3 = nastepne (3 1/8 = 4 i 1/4 =5/8 ) :3

Answer 1

( 3 cale i 2/3 + 1 cala i 3/5) : na 4 =  

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

(3 10/15+1 9/15):4=

4 19/15:4=79/15:4=79/15*1/4=79/60= 1 19/60

 

( 3 cale i 1/2 + 3 cale i 1/3 + 3 cale i 1/6 ) :3

(3 1/2+3 1/3+3 1/6):3=

(3 3/6+3 2/6+3 1/6):3=

9 6/6:3=10:3=3.3....

 

 (3 1/8 + 4 i 1/4 +5/8 ) :3=

(3 1/8+4 2/8+5/8):3=

7 8/8:3=8:3=2.66....