Question

calculati a)9/10-0,(3);
b)3/11+1/5-7/55;
c)3/4-5/4:(-15/8)​

Answer 1

Răspuns:

a)

9/10-3/9=81/90-30/90=61/90=0,6(7)

b)

3/11+1/5-7/55=15/55+11/55-7/55=19/55=0,3(45)

c)

5/4÷ (-15/8)=5/4×(-8/15)= - 40/60= - 4/6= - 2/3

3/4- (-2/3)=3/4+2/3=9/12+8/12=17/12=1,41(6)