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Earn +20 ptsQ: How do you work out 3x-7?
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Continue Learning about Math & Arithmetic
How do you Simplify 21?
3x7
How can you use 1s and 2s facts to find 3x7?
I think 7x3 is = to 21
What can you times together to make twenty one?
7x3 or 3x7, which is all you can do to multiply to get 21.
When a number is divided by seven the answer is three remainder four What is the number?
You take 3x7+4=25 :)
What prime number comes after 19?
23 Prime numbers are odd numbers and 21=3x7
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