Answer
$\frac{3}{10}$
Work Step by Step
We simplify:
$\displaystyle \frac{12}{40}=\frac{2\cdot 2\cdot 3}{2\cdot 2\cdot 2\cdot 5}=\frac{3}{10}$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 1 - Section 1.6 - Introduction to Fractions - Exercise - Page 31: 25
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