ANSWERS:
Not
same
least common denominator
There are several ways to find the common denominator, but the easiest way is simply to
multiply the denominators together as in this example:
Let's try adding
1
+1
2
3
2 3 = 6 Lowest common denominator is
.
Now that you have 6 as the lowest common denominator, you must change the two numerators
(1 + 1) to sixths.
You make this change by multiplying both numerator and denominator by the same number, so
that the fraction will keep its se value.
To change 1 to sixths, multiply both numerator and denominator by 3:
2
1
x
3
=3
2
3
6
To 1 change to sixths, multiply both by 2:
3
1
x
2
=2
3
2
6
You can now add the fractions, because they have the same denominator.
2
+2
=5
6
6
6
54
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