x 100% = = 84 -x = -20 x = 20

1 1. ( 2 ) x ( 2 ) = 2 x 2 ( ) = 2 x 2 = 2 ( ) = 2 = = 2. Log 45 = log ( 9 x 5 ) = log 9 + log 5 = log 3 + log 5 = 2 log 3 + log 5 = 2(0,477) + 0,699 ...
Author:  Johan Budiono

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