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skaterwolf1317
14.06.2020 •
Mathematics
If a/b = 6/7 and a/c = 2/5 , what is the value of 3b+c in terms of a?
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Ответ:
6a = 3b + c
Step-by-step explanation:
1. Cross multiply each equation to get 7a = 6b and 5a = 2c.
2. Add the two equations: 7a + 5a = 6b + 2c
If we add the like terms, it will be 12a = 6b + 2c.
3. Since we want 3b + c, we can divide the whole equation by 2.
Ответ:
1. b = (−1 / 6) c + (7 / 16)
2. b = (−1 / 5) c + (31 / 120)