Question

Transformati in fractii si apoi calculati :
a) 2,(3) + 1,2
b) 0,0(3) + 2,5(3)
c) 2,12(9) - 2,13
d) (3,27 + 0,73) × 0,31

va rog mult dau coroana si ce vreti voi ​​

Answer 1

Răspuns:

a) 53/15

b) 77/30

c) 0

d)  31/25

Explicație pas cu pas:

a) (23-2)/9 + 12/10 = 7/3+6/5 = (7*5 + 3*6)3*5= (35+18)/15=53/15

b) 3/90+(253-25)/90=1/30+228/90=1/30 + 76/30 = 77/30

c) (2129-212)/900 - 213/100=1917/900 - 213/100 = (213-213)/100=0

d) (327+73)/100 * 31/100 = 4 * 31/100 = 31/25