Question

1) Calcule:
a) 7 – (-2) =
b) 7 – (+2) =
c) 2 – (-9) =
d) -5 – (-1) =
e) -5 -(+1) =
f) -4 – (+3) =

Answer 1

a)

7 - ( -2 )

7 + 2

9

b)

7 - ( +2 )

7 - 2

5

c)

2 - ( -9 )

2 + 9

11

d)

-5 - ( -1 )

-5 + 1

-4

e)

-5 - ( + 1 )

-( 5 + 1 )

-6

f)

-4 - ( +3 )

-( 4 + 3 )

-7

[ AC/DC ]

Answer 2

Explicação passo-a-passo:

7 – (-2)

7+2

9

7 – (+2)

7-2

5

2 – (-9)

2+9

11

-5 – (-1)

-5+1

-4

-5 -(+1)

-5-1

-6

-4 – (+3)

-4-3

-7