Question

gente me ajudem por favor

-(-2)-7-{-18+4+(7-15)}

Answer 1

-(-2)-7- [-18+4+(7-15)]

2-7- [-18+4+(-8)]

2-7- [-18+4-8]

2-7- [-22]

2-7-22

-27

Answer 2

-(-2)-7-{-18+4(7-15)}
-(-2)-7-(-14+(-8)
2-7-(-14-8)
-5-(-22)
-5+22=17