Nilai x yang memenuhi ..................................

Nilai x yang memenuhi …………………………….

Jawaban Terkonfirmasi

$( ( frac{2}{5}) ^x * ( frac{2}{5}) ^2 )^3 = ( frac{25}{4} )^{21}$

$( ( frac{2}{5}) ^ {(x+2)*3} = ( frac{25}{4} )^{21}$

$( ( frac{2}{5}) ^ {(3x+6)} = ( frac{5^2}{2^2} )^{21}$

$( ( frac{2}{5}) ^ {(3x+6)} = ( frac{2^2}{5^2} )^{-21}$

$( ( frac{2}{5}) ^ {(3x+6)} = ( frac{2}{5} )^{-42}$

dikeluarkan

3x+6 = -42
3x = -48

x = -16