Question

a) (-12)+ ? = -12
b) (+19)+ ? = +12
c) ? (-10) = 0
d) ? (-6) = -4

alguem me ajuda porfavor

Answer 1

a) (-12)+ ? = -12
-12 + x= -12
x= -12 +12
x=0

b) (+19)+ ? = +12
19 + x= 12
x= 12 -19
x= - 7

c) ? (-10) = 0
x -10=0
x= 10

d) ? (-6) = -4
x-6= -4
x= -4 +6
x= 2