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solve for x 25^4x=125^7x-13

D e a r S t u d e n t 25^{4 x} = 125^{7 x - 13} {(5^{2})}^{4 x} = {(5^{3})}^{7 x - 13} 5^{8 x} = 5^{21 x - 39} 8 x = 21 x - 39 8 x - 21 x = - 39 - 13 x = - 39 x = 3 R e g a r d s

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solve for x 254x=1257x-13