Question

find the sum without number line: (a) (-7) + (+8) (b) (-20)-(-40)​

Answer 1

Answer:

(a).-7+8 = 1

(b).-20-(-40)

= -20+40 = 20

Answer 2

a. (-7) + (8)

-7+8

=》 1

b. (-20)-(-40)

-20+40

=》 20

I hope this help you....❤❤❤