1. Determine o valor de x, para que se tornem equivalentes :
a) ( 2 X ) b) ( 36 X )
= =
( 3 30) ( 40 20 )
c) ( X 9 ) d) ( 27 X )
= =
( 5 45 ) ( 36 4 )
a) ( 2 X ) b) ( 36 X )
= =
( 3 30) ( 40 20 )
c) ( X 9 ) d) ( 27 X )
= =
( 5 45 ) ( 36 4 )
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b) 18 (metade)
c) 1 (x9)
d) 3 (div. 4)