Question about Texas Instruments TI-80 Calculator

# ALGEBRA 15%=RF + [1.25 X (14% - Rf)]

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.15 - RF = 1.25x.14 - 1.25xRF
.15 + .25RF = .175
.025 = .25RF
RF = .1

Posted on Sep 30, 2009

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Posted on Jan 02, 2017

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