Question

Calcule as somas : a) ( -8 ) + ( -4 )= b) ( -10 ) + ( -9 )= c) ( +11 ) + ( -3 )= d) ( -15 ) + ( -26 )= e) ( +1 ) + ( -8 )= f) ( -19 ) + 0 = g) ( +5 ) + ( -13 )= h) ( -70 ) + ( -9 )= i) ( +15 ) + ( -13)= j) ( -20 ) + ( -19 )= k) ( +28 ) + ( +15 )=

Answer 1

Olá,

Vamos lá,

a) ( -8 ) + ( -4 )= -8 - 4 = -12
b) ( -10 ) + ( -9 )= -10 -9=-19
c) ( +11 ) + ( -3 )= 11 - 3 = 8
d) ( -15 ) + ( -26 )= -15 - 26 = -41
e) ( +1 ) + ( -8 )= 1 - 8 = -7
f) ( -19 ) + 0 = -19
g) ( +5 ) + ( -13 )= 5 - 13 = -8
h) ( -70 ) + ( -9 )= -70 -9 = -79
i) ( +15 ) + ( -13)= 15 - 13 = 2
j) ( -20 ) + ( -19 )= -20 -19 = -3
k) ( +28 ) + ( +15 )= 28 + 15 = 43