21 and 24 and 26
Only

21.
3 - 4 × 5 + 5
3 - 20 + 5
- 17 + 5
- 12
24.
[tex]\frac{2(3-7)+4(8)}{4(-3)+(-3)(-2)}[/tex]
[tex]\frac{2(-4)+4(8)}{4(-3)+(-3)(-2)}[/tex]
[tex]\frac{-8+32}{-12+6}[/tex]
[tex]\frac{24}{6}[/tex]
4
26.
-(3 - 5) - (2 - (3² - 13))
-(- 2) - (2 - (9 - 13))
2 - (2 - (- 4))
2 - (2 + 4)
2 - (6)
- 4