Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 12 - Data Analysis and Probability - 12-8 Probability of Compound Events - Mixed Review - Page 770: 55


$\frac {7(y+1)}{7y+1}$

Work Step by Step

$\frac{\frac{7y^2+6y-1}{y+3}}{\frac{49y^2-1}{7y+21}}$ Side note: $(1/2)/(3/5) = .5/.6 = 5/6$ $(1/2)/(3/5) = 1*5/2*3 = 5/6$ So, for a fraction $(a/b)/(c/d)$, where $a, b, c, d$ are non-zero, $(a/b)/(c/d)$ = $a*d/b*c$ (end side note) $\frac{\frac{7y^2+6y-1}{y+3}}{\frac{49y^2-1}{7y+21}}$ $\frac {7y^2+6y-1}{y+3}* \frac {7y+21}{49y^2-1}$ $\frac {(7y-1)(y+1)}{y+3}*\frac {7(y+3)}{(7y+1)(7y-1)}$ $\frac {(7y-1)(y+1)(7)(y+3)}{(y+3)(7y+1)(7y-1)}$ $\frac {(y+1)(7)(y+3)}{(y+3)(7y+1)}$ $\frac {(y+1)(7)}{(7y+1)}$ $\frac {7(y+1)}{7y+1}$
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