a) [20+(-3+2)]-(-1-2)
b) 2-[(3-4)-(-5-6)]
c) (4+2)-[7-(-3-5-7)]
b) 2-[(3-4)-(-5-6)]
c) (4+2)-[7-(-3-5-7)]
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Respuesta:
a) 22
b) -8
c) -16
Explicación paso a paso:
a) [20+(-3+2)]-(-1-2)
[20-1]+3
19+3=22
b) 2-[(3-4)-(-5-6)]
2-[-1+11]
2-10=-8
c) (4+2)-[7-(-3-5-7)]
6-[7-(-15)]
6-22=-16