Question

1) 7 supra 12 + 1 supra 24=?

2)1 supra 18 + 7 supra 36 + 11 supra 72=?

3)1 supra 28 + 7 supra 72 + 1 supra 84=?

4)7 supra 120 + 11 supra 240 + 1 supra 400=?

 

Va rog sa ma ajutati! :)

Answer 1

a) 7/12 + 1/24=  (14+1)/24=  15/24= 5/8

b)1/18 + 7/36 +11/72= (4+14+11)/72= 29/72

c)1/28 + 7/72 +1/84= (54+147+18)/1512=  219/1512=  73/504

d)7/120 +11/240 + 1/400= (70+55+3)/1200= 128/1200= 64/600= 8/75