Question

ADD: 30,-10,-12,-5,-15,20​

Answer 1

30+(-10)+(-12)+(-5)+(-15)+20=8

Hope this helps

Answer 2

30 +(-10) +(-12)+(-5)+(-15)+20

=30-10-12-5-15+20

=20-12-5-15+20

=8-5-15+20

=3-15+20

=-12+20

=+8