Question

Hi, can someone help me with this, please? Thank you!

Answer 1

Hi, this question is actually really simple.

Let's consider that one house = 7 matchsticks. This is because, if we count the first two squares given in your question, it will count to 7.

Now we understood that one house has 7 matchsticks. So, if we want two houses, then consider two more square of matchsticks. So, 12. Likewise, for 3 houses , add 2 more squares, thus resulting in 17. For four houses, again add 2 more squares, giving the result as 22 matchsticks.

Note- While adding two more squares for each, do not count the left side 2 matchsticks, as they are combined with the previous matchsticks. I meant that , if you want to know 2nd house matchsticks, count 7+7=14, then subtract 14-2, so 12

Conclusion-

Now, the brief answer is:-

1 house = 7 matchsticks

2 houses = 12 matchsticks

3 houses = 17 matchsticks

4 houses = 22 matchsticks

5 houses = 27 matchsticks

Hope it helps you...

(Answered by Benjemin)

Answer 2

2=14

3=21

4=28

5=35

Explanation:

If 1 house =7 matchsticks

Then 2 houses = x

x=2×7=14 matchsticks

If 2 houses=14 matchsticks

3 houses=x

2x=14×3

Dividing both sides by 2

x=7×3=21

4=28

5=35

Hope it helps