Question

12)
a)0,75:1intreg1/8-0,1(6)
b)0,2(7):1intreg1/4+0,25
c)0,36:(-5intregi2/5)-1,(3)

Answer 1

a)0,75:1intreg1/8-0,1(6)=3/4:9/8-1/6=3/4×8/9-1/6=2/3-1/6=(4-1)/6=3/6=1/2=
=0,5
0,75=75/100=3/4
1intreg1/8=9/8
0,1(6)=(16-1)/90=15/90=1/6

b)0,2(7):1intreg1/4+0,25=5/18:5/4+1/4=5/18×4/5+1/4=2/9+1/4=
=(8+9)/36=17/36=0,47(2)
0,2(7)=(27-2)/90=25/90=5/18
1intreg1/4=5/4
0,25=25/100=1/4

c)0,36:(-5intregi2/5)-1,(3)=9/25:(-27/5)-4/3=-9/25×5/27 -4/3=
=-1/15-4/3=(-1-20)/15=-21/15=-7/5=1,4
0,36=36/100=9/25
5intregi2/5=27/5
1,(3)= (13-1)/9=12/9=4/3