(54)
(55)
less
2/5 - 1/3 = ****
To subtract fractions whose denominators do
not have a common dividend, you must multiply
the denominators and the product is your
l.c.d. In the above problem, 15 is the l.c.d.
(5 x 3 = 15).
4/7 - 3/4 = ****
The l.c.d. is ______________.
(55)
(56)
28
2/5 - 1/3 = ****
2/5 - 1/3 can be expressed in EQUIVALENT
FRACTIONS BY __________ - __________.
(56)
(57)
6/15 - 5/15
To practice:
2/5 x 3/3 - 1/3 x 5/5 =
6/15 - 5/15 =
6/15 - 5/15
(57)
(58)
1/15
5/7 - 1/3 =
We
subtract
the
numerator after
the
subtraction sign
and
carry
over
the
l.c.d.
25
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