An algebra problem by Annie Li

Algebra Level 1

9 − 3 ÷ 1 3 + 1 = ? 9 - 3\div \dfrac13 + 1 = \, ?


The answer is 1.

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Annie Li by Annie Li , 15, Australia

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2 solutions

Mohammad Khaza
Jul 1, 2017

please ,upload these types of problem. i will be able to keep my streak within a moment.

9-3÷1/3+1=9-9+1

=0+1=1

2 Helpful 0 Interesting 0 Brilliant 0 Confused

😂 that is a good way to keep your streak alive!

Annie Li - 3 years, 11 months ago
Annie Li
Apr 10, 2017
  • firstly, you have to divide the 3 by 1 3 \frac{1}{3} whichs basically equals to 3×3 which equals to 9
  • Secondly, you have to minus 9 from nine which is 0
  • Finally, you add 1 to 0 which is obviously 1
1 Helpful 0 Interesting 0 Brilliant 0 Confused

For more questions like these, please follow me.

Annie Li - 4 years, 1 month ago

For problems like these just remember to Please Excuse My Dear Aunt Sally.

Denton Young - 4 years, 1 month ago

Haha if that is suppose to be a joke

Annie Li - 4 years, 1 month ago

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A mnemonic, actually, and a very useful one. PEMDAS (Parentheses, Exponentiation, Multiplication, Division, Addition, Subtraction) gives you order-of-operations. I remember that as Please Excuse My Dear Aunt Sally.

I love mnemonics. They're very useful. Here are two more examples.

Read Out Your Good Book In Verse is the colors of the rainbow.

Timid Virgins Make Dull Company gives you your course at sea.

Denton Young - 4 years, 1 month ago

I thought explicit calculations were not allowed on Brilliant...oh well, who cares...

William Huang - 3 years, 10 months ago

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Ok thx for letting me know

Annie Li - 3 years, 10 months ago

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