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valentinak56 [21]
3 years ago
8

How do know if you can divide a number by 3. Is there a pattern?

Mathematics
2 answers:
ioda3 years ago
7 0
When you add up the sum of the digits, it should be a multiple of three. 21 is 2 plus 1 equals 3, so since 3 is a multiple of three, 21 is divisible by 3
kvv77 [185]3 years ago
4 0
You can know if the number is divisible by 3 by adding the numbers up. If the sum is dividable by 3 then the original number can be as well. For example, the number 93. 9+3= 12 and 12 can be divided by 3. This means 93 is also divisble by three. If you do divide 93 the quotient is 31.
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Bobby Joe and Billy ray went fishing at the local watering hole and caught a total of 51 fish. Billy Rat caught 17 fewer fish th
blondinia [14]

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Bobby Joe caught 34 fishes

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Step-by-step explanation:

Let the number of fish Bobby Joe caught = y

Let the number of Billy Ray caught = x

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y = x - 17

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5 0
3 years ago
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So first parenthasees
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group like terms
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divide both sides by 4
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4 years ago
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