Question

Resolva as expressões

[(+2+3/2) . 15/3 + -1/8 / -3/4] . 12/19

(-7+3)²/(-2)³-(-2-7)²/(+27)

Answer 1

[(+2+3/2) × 15/3 + -1/8 / -3/4] × 12/19 =
[(3 1/2) × 15/3 + 1/6] × 12/19 =
[(7/2) × 5 + 1/6] × 12/19 =
[35/2 + 1/6] × 12/19 =
106/6 × 12/19 =
4

(-7+3)²/(-2)³-(-2-7)²/(+27)=
(-4)²/(-2)³-(-9)²/(+27)=
16/(-8)-(81)/(+27)=
-2-3=
- 5