Question

10.5-(+11)-(-20)
11.9-[(-5)-(+7)]
12.7-[(-3)-(-)]
13. -11-[(+6)-(+4)]
14.48 - [(+5)-(-)]
15. (+4) + [(+3)+(-7] + (+1)
16. (-3)+(-5)-[(+8)+(-10)]}
2.

Answer 1

Respuesta:

10. 5-11+20=14

11. 9+5-7=7

12. 7+3=10

y así solo aplica ley de signos

(+)(+)=+

(-)(-)=+

(-)(+)=-

(+)(-)=-