Question

3) 716+(-1142)+(-916)+1742 ;
4)-940+1350+(-2350)+1940;
5)-3 3136+(-1 1724)+5 436+(-2 424)
Срочно памагите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

3) 716+(-1142)+(-916)+1742 =17/42-11/42-9/16+7/16=

=6/42-2/16=1/7-1/8=(8-7)/56=1/56

4)-940+1350+(-2350)+1940=

=-23/50+13/50+19/40-9/40=-10/50+10/40=

=-1/5+1/4=(-4+5)/20=1/20

5)-3 3136+(-1 1724)+5 436+(-2 424)=

=-2 4/24-1 17/24-3 31/36+5 4/36=

=-2 4/24-1 17/24 +4 40/36-3 31/36=

= -3 21/24+1 9/36=-3 7/8+1 1/4=

=(-31+10)/8=-21/8=-2 5/8