📖 Simple equations · Class 7 · 2:44

The Code of Three: Simple equations comic video

A comic book about Simple equations. Follow Momo, learn the idea, and answer three questions to beat Professor Puzzle.

▶ Video · 2:44 The Code of Three: Simple equations comic video

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0:00 LearnFun Comics. The Code of Three. Decode or be locked out! Can you do math?

0:06 Numberland. Momo unlocks the chest.

0:09 Unlock the chest! It's a simple code.

0:12 Oh, a simple code? That's easy for me!

0:15 Three times a number plus five equals twenty. Can I figure it out?

0:20 The magic of numbers

0:22 Secret number, do magic sums.. Find it, solve the puzzle.. Treasure hunt, answer known.

0:28 I love puzzles! Let's find the secret number! It's like a game!

0:32 Let's say x is five. Then 35+5=20, right?

0:38 Let's try one! 3 times a number plus 5 equals 20.

0:42 20 - 5 = 15.. Then, we divide 15 by 3: 15 ÷ 3 = 5.. So, the secret number is 5!

0:53 Momo's secret

0:54 First, undo what the villain did.. Divide for the secret.. It's like unwrapping a present!

1:01 Unwrap the present by undoing and dividing. It's simple!

1:05 Your turn, hero! Three times a number plus six equals twenty-one. What's the number? A: 6. B: 7. C: 8. D: 5

1:18 The answer is 5. 3x + 6 = 21 , becomes, 3x = 15 , becomes, x = 5. 5

1:26 Wrong! Try x is four. Then 34+5=17. Not twenty!

1:33 Twice a number minus six equals ten. A: 2. B: 4. C: 6. D: 8

1:43 The answer is 8. 2n - 6 = 10; 2n = 16; n = 8. 2 × 8 - 6 = 10.

1:52 The final battle Professor Puzzle says: Twice a number plus three equals fifteen. What is the number? A: 7. B: 8. C: 9. D: 6

2:06 The answer is 6. 15 - 3 = 12, then 12 ÷ 2 = 6.

2:13 You're stuck! Now, divide and take away five.

2:16 Twenty minus five is fifteen. Fifteen ÷ 3 = 5. The code is 5!

2:22 The chest opens. Momo smiles. All is well.

2:26 Remember. Undo what the villain did first. Then divide to find the secret number. It's like unwrapping a present!

2:34 But what's next? A secret note falls from the chest, with a question for Momo.

2:39 Read this comic and answer the questions yourself, at learn fun dot in.

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