Explicación paso a paso:
(9-2+4)+15
(7+4)+15
11+15=26
100-(4+20??? 5)
(20-5+3)+18÷6
(15+3)+3
18 + 3=21
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Explicación paso a paso:
(9-2+4)+15
(7+4)+15
11+15=26
100-(4+20??? 5)
(20-5+3)+18÷6
(15+3)+3
18 + 3=21