Question

ME AJUDEM POR FAVOR, PRECISO PRA HOJE 5) Calcule: a) (+ 9) + (− 3) = b) (+ 7) + (+ 2) = c) (− 4) + (−8) = d) (− 7) + (+ 7) = e) (− 5) − (− 6) = f) (+ 8) − (+ 2) = g) (+ 7) − (− 2) = h) (− 6) − (+ 7) =

Answer 1

a) 6

b) 9

c) -12

d) 0

e) 1

f) 6

g) 9

h) -13

Answer 2

a) + 9 + (− 3) = 9 - 3 = 6

b) (+ 7) + (+ 2) = 7 + 2 = 9

c) (− 4) + (−8) = - 4 - 8 = -12

d) (− 7) + (+ 7) = 0

e) (− 5) − (− 6) = - 5 + 6 = 1

f) (+ 8) − (+ 2) = 8 - 2 = 6

g) (+ 7) − (− 2) = 7 + 2 = 9

h) (− 6) − (+ 7) = - 6 - 7 = - 13