add 4\15 of 20 and 2\7
Answers
Answered by
4
Answer:
Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
4
15
=
4 × 7
15 × 7
=
28
105
Likewise, for the 2nd fraction, since 7 × 15 = 105,
20
7
=
20 × 15
7 × 15
=
300
105
Add the two like fractions:
28
105
+
300
105
=
28 + 300
105
=
328
105
So, 4/15 + 20/7 = 328/105
In mixed form: 3
13
105
Answered by
1
4/15 ×20 +2/7
16/3 + 2/7
LCM of denominators 3 and 7 is 21.
16×7/3×7 + 2×3/7×3
112/21 + 6/21
118/21.
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