Question

Potrzebna szybka pomoc!! Działania z matematyki: a) 1 5/8 - (2 2/3 + 0,25= ? b) 1 2/5 - 3 7/8 - 0,125=? c) 1/2 - 1/3 - (1/4 - 1/5)=?

Answer 1

a) 1 5/8 - (2 2/3 + 0,25)=  1 5/8 - (2 8/12 + 1/4)=  1 5/8 - (2 8/12 + 3/12)=

1 5/8 -5 11/12=1 15/24 -5 22/24=-4 7/24

b) 1 2/5 - 3 7/8 - 0,125= 1 2/5 - 3 7/8 - 1/8=1 2/5 -3 6/8= 1 16/40 -3 30/40 =-2 14/40 =-2 7/20

c) 1/2 - 1/3 - (1/4 - 1/5)= 3/6 - 2/6 - (5/20 - 4/20)=1/6 -1/20=10/60 -3/60=7/60