djnkyworld
09.10.2019 •
Mathematics
1-106 lesson 1.2.5
rewrite each expression as a single fraction.
a. 3/8 + 1/8. b. 4/5 + 3/4. c. 6/7 - 2/5
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Ответ:
A) 1/2
B) 31/20
C) 16/35
Step-by-step explanation:
For A, I added 3 plus 1 and kept the denominator 8. Then I simplified.
For B, I multiplied 4/5 by 4/4 and 3/4 by 5/5 so that they would share the denominator 20. Then I added the numerators.
For C, I multiplied 6/7 by 5/5 and 2/5 by 7/7 so that they would share the denominator 35. Then I subtracted the numerators.
Ответ:
it is 5
Step-by-step explanation: