Respuesta:
Explicación paso a paso:
[tex]X:9+12=20 \\ x \div 9 = 20 - 12 \\ x \div 9 = 8 \\ x = 8 \times 9 \\ x = 72[/tex]
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Respuesta:
Hola!
Explicación paso a paso:
[tex]X:9+12=20 \\ x \div 9 = 20 - 12 \\ x \div 9 = 8 \\ x = 8 \times 9 \\ x = 72[/tex]
salu2