Question

Calcule

a)(-3)+(4)
b)(-7)+(-8)
c)(10)-(-5)
d)(-7)-(-20)

Answer 1

a)(-3)+(4)
-3+4
+1

b)(-7)+(-8)
-7-8
-15

c)(10)-(-5)
10+5
15

d)(-7)-(-20)
-7+20
+13

Answer 2

a) (-3)+(4) = - 3 + 4 = + 1
b) (-7)+(-8) = - 7 - 8 = - 15
c) (10)-(-5) = + 10 + 5 = + 15
d )(-7)-(-20) = - 7 + 20 = + 13
Espero ter ajudado!