Question

Resolva as adições e subtrações: a) (-34) + (+12) b) (-84) + (+84) c) (+48) + (-66) d) (-91) + 0 e) 0 + (+77) f) (- 3) + (+11) + (-8) g) (-12) + (-3) + (+9) h) (-5) + (-1) + (- 26)

Answer 1

a) ( - 34 ) + ( + 12 ) = - 34 + 12 = - 22

b) ( - 84 ) + ( + 84 ) = - 84 + 84 = 0

c) ( + 48 ) + ( - 66 ) = + 48 - 66 = - 18

d) ( - 91 ) + 0 = - 91 + 0 = - 91

e) 0 + ( + 77 ) = 0 + 77 = 77

f) ( - 3 ) + ( + 11 ) = - 3 + 11 = 8

g) ( - 12 ) + ( - 3 ) + ( + 9 ) = - 12 - 3 + 9 = - 15 + 9 = - 6

h) ( - 5 ) + ( - 1 ) + ( - 26 ) = - 5 - 1 - 26 = - 32