Question

Calculati:
a) 1\2-1\4+5\6-3\8=
b) 1 5\6+4\3-1\2-0,(25)=
c) 25,3+0,7-21,(83)-16\99=
d) 2,71-0,8(2)+1,2(5)+1 3\5-16\99=

Answer 1

a) 1/2-1/4+5/6-3/8
=2/4-1/4+5/6-3/8
=1/4+5/6-3/8
=6/24+20/24-3/8
=26/24-3/9
=26/24-9/24
=17/24

b)15/6+4/3-1/2-0,25
=15/6+4/3-1/2-1/4
=15/6+8/6-1/2-1/4
=23/6-1/2-1/4
=23/6-3/6-1/4
=20/6-1/4
=80/24-6/24
=74/24

c),253/10+7/10-2168/99-16/99
=422/990