Question

1)-7+(-8) 2)-0,38+(-0,74) 3)-1,8+(-0,34) 4)-4 6/7+(2 3/7) 5)-5/6+(-7/8) 6)-6 7/15+(-8 3/10)​

Answer 1

1)-7+(-8) =-7-8=-15

2)-0,38+(-0,74) =-0,38-0,74=-1,12

3)-1,8+(-0,34) =-1,8-0,34=-2,14

4)-4 6/7+(2 3/7)-4 6/7+2 3/7=-2 3/7

5)-5/6+(-7/8) =-5/6-7/8=(-5*6-7*4)/36=-58/36=-29/18=-1 11/18

6)-6 7/15+(-8 3/10)=-6 7/15-8 3/10=

=-6 14/30-8 9/30=-14 21/30=-14 7/10