Respuesta:
1. - 50
2. 10
3. 30
4. -2
5. - 210
Explicación paso a paso:
1. - 8+(-42) = - 8-42 = - 50
2. (-5)*(-2) + (-2) + (2) = 10 - 2 + 2 = 10
3. (4)*(9) - (6)*(1) = 36-6 = 30
4. (27)/(-3) + (5)+(2) = - 9+5+2 = - 2
5. (-5)(-3)(-2)(7) = 15(-2)(7) = - 30(7) = - 210