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3 . = ...kedua ruas kalikan 9
27 . = 1
=
+ 1 = 0 ..... kalikan denga 2
2x + 1 + 2 = 0
2x + 3 = 0
2x = - 3
x =
11) 25 . . =
5² . . =
5³ . . =
5² . . =
=
=
2 + 6x = x - 6
6x - x = - 6 - 2
5x = - 8
x =
x = - 1,6