Question

efetue: a) (+7) + (+3) b) (-2) + (+15) c) (-3) + (-9) d) (-8) + 0+ (+1) e) (+31) + ( -45) + (+3) f) (+7)-(+5) g) (+15) - (-7) h) (-9) - (-8) i) (-27) - (15) j) (-2) - (-69) me ajudem​

Answer 1

Olá!

( + 7 ) + ( + 3 )

+ 7 + 3

+ 10

( - 2 ) + ( + 15 )

- 2 + 15

+ 13

( - 3 ) + ( - 9 )

- 3 - 9

- 12

( - 8 ) + 0 + ( + 1 )

- 8 + 1

- 7

( + 31 ) + ( - 45 ) + ( + 3 )

+ 31 - 45 + 3

- 14 + 3

- 11

( + 7 ) - ( + 5 )

+ 7 - 5

+ 2

( + 15 ) - ( - 7 )

+ 15 + 7

+ 22

( - 9 ) - ( - 8 )

- 9 + 8

- 1

( - 27 ) - ( 15 )

- 27 - 15

- 42

( - 2 ) - ( - 69 )

- 2 + 69

+ 67

Espero que seja útil !