Question

subtração
a) ( +6 ) - ( +8 )
b) ( -4 ) - ( -21 )
c) (-10) - (-12)
d) (1,56) - (+3,17)
e)(+2,6) - (0,75)​

Answer 1

a) ( +6 ) - ( +8 )

6 - 8

= -2

b) ( -4 ) - ( -21 )

-4 + 21

= 17

c) (-10) - (-12)

-10 + 12

= 2

d) (1,56) - (+3,17)

-(3.17 - 1.56)

= -1.61

e)(+2,6) - (0,75)

2.6 - 0.75

= 1.85