tolong di jawab ya please

1 . ( (40÷5 )×6)-19×3= ( 8×6) -19 ×3= 48 -57 = -9
2.(20-(-5)× (-14-(10)=25 × (-24) =
3. -6+(6+2)-((-3)×3)=-6 +(8)+ 9=11
4. 160÷ 8 ×4 -8+ 15= 80-8 +15 =87