Question

Add (1) 78,-15 (2)620,-315 (3)-48,89 (4)-1567,+312 (5)-882,-20,205 (6)-7,7 (7) 6,-11​

Answer 1

1 )= 78+(-15)

= 63

2=620+(-315)

=305

3= -48+89

=41

4= -1567+312

=-1255

5=-882+(-20)+205

=-697

6= -7+7

=0

7=6+(-11)

=-5