Respuesta:
a) 9
Explicación paso a paso:
( 3 + 4 + 8 + 6 ) - ( 5 + b + 7 ) = 11
21 . - ( 12 + 6 ) = 11
9 - b = 11
b = 9
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Respuesta:
a) 9
Explicación paso a paso:
( 3 + 4 + 8 + 6 ) - ( 5 + b + 7 ) = 11
21 . - ( 12 + 6 ) = 11
9 - b = 11
b = 9