Simplify the following "-8/21" + ( - 1/3 )
Answers
Answer:
Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21
For the 1st fraction, since 3 × 7 = 21,
1
3
=
1 × 7
3 × 7
=
7
21
Likewise, for the 2nd fraction, since 21 × 1 = 21,
8
21
=
8 × 1
21 × 1
=
8
21
Add the two like fractions:
7
21
+
8
21
=
7 + 8
21
=
15
21
15/21 simplified gives
5
7
So, 1/3 + 8/21 = 5/7
Step-by-step explanation:
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Answer:
1/3 + 8/21 = 5/7
Step-by-step explanation:
Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21
For the 1st fraction, since 3 × 7 = 21,
13 = 1 × 73 × 7 = 721
Likewise, for the 2nd fraction, since 21 × 1 = 21,
821 = 8 × 121 × 1 = 821
Add the two like fractions:
721 + 821 = 7 + 821 = 1521
15/21 simplified gives 57
So, 1/3 + 8/21 = 5/7