Respuesta:
19980
Explicación paso a paso:
9990 +10 = 10000
10000 + 10000 = 20000
20000 -20 = 19980
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Verified answer
Respuesta:
19980
Explicación paso a paso:
9990 +10 = 10000
10000 + 10000 = 20000
20000 -20 = 19980