Fundamentals of Mathematics, 2008a

264
CHAPTER 4.
INTRODUCTION TO FRACTIONS AND MULTIPLICATION
AND DIVISION OF FRACTIONS
missing factor = (product) ÷ (known factor)
We get
M = 9 4 ÷ 3 8 = 9 4 · 8
3
=
3 2
)9 )8
·
)4 )3
1 1
=
3·2
1·1
= 6
Thus, 3 8 of 6 is 9 4 .
For convenience, let's convert the mixed numbers to improper fractions.
M · 9
7 = 27
14
Now, using
missing factor = (product)÷(known factor)
we get
M = 27
14 ÷ 9 7 = 27
14 · 7
9
=
3
)27
·
)14
2
= 3·1
2·1
= 3 2
1
)7
)9
1
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