Question

Calcule em seu caderno.
a) +8+7
b) 9+3
c) -10+5
d) -2 -8
e)-9 -12
f)-8 + 9

Answer 1

a +8+7=+15
b 9+3=12
c -10+5=-5
d -2-8=-10
e -9-12=-21
f -8+9=1

Answer 2

a ) + 8 + 7 = 15
b ) 9 + 3 = 12
c ) -10 + 5 = -5
d ) -2 - 8 = -10
e ) -9 - 12 = -21
f ) -8 + 9 = 1