Answer:
Step-by-step explanation:
14. 1/4 + 7/20 + 3/20
find the LCD of denominator
LCD is 20
1 * 5/4 * 5 + 7/20 + 3/20
5/20 + 7/20 + 3/20
add all numerator
5 + 7 + 3 = 15
copy the LCD of denominator
15/20
15. 1/7 and 3/7
since they both the same denominator you don't need to find the LCM just copy it and then add the numerator.
16. 3/7 and 2/3
LCD = 21
add the numerator
3 + 2 = 5
5/21
17. 6 and 2 4/10
mixed number into infraction number
2 4/10 = 10 * 2 + 4
= 24/10
6 - 24/10
LCM = 10
6 * 10/10 - 24/10
60/10 - 24/10
= 36/10
infraction number into mix number
= 3 and 6/10
yan lang kaya ko
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Answers & Comments
Answer:
Step-by-step explanation:
14. 1/4 + 7/20 + 3/20
find the LCD of denominator
LCD is 20
1 * 5/4 * 5 + 7/20 + 3/20
5/20 + 7/20 + 3/20
add all numerator
5 + 7 + 3 = 15
copy the LCD of denominator
15/20
15. 1/7 and 3/7
since they both the same denominator you don't need to find the LCM just copy it and then add the numerator.
16. 3/7 and 2/3
LCD = 21
add the numerator
3 + 2 = 5
5/21
17. 6 and 2 4/10
mixed number into infraction number
2 4/10 = 10 * 2 + 4
= 24/10
6 - 24/10
LCM = 10
6 * 10/10 - 24/10
60/10 - 24/10
= 36/10
infraction number into mix number
= 3 and 6/10
yan lang kaya ko