Question

Hue is arranging chairs. She can form 2 rows of a given length with 3 chairs left over, or 8 rows of that same length if she gets 15 more chairs. Complete the equation and solve it to find how many chairs are in that row length.

Answer 1

Answer: If Hue can form 2 rows of a given length with 3 chairs left over, we can represent this as:

2x + 3 = chairs in that row length

Also, if she can form 8 rows of that same length if she gets 15 more chairs, we can represent this as:

8x + 15 = chairs in that row length

Since the number of chairs in that row length is the same in both equations, we can set them equal to each other:

2x + 3 = 8x + 15

To solve for x, we can subtract 3 from both sides:

2x = 8x + 12

Then we can subtract 2x from both sides:

6x = 12

Finally, we can divide both sides by 6:

x = 2

So the number of chairs in that row length is 2x + 3 = 2(2) + 3 = 7.

Explanation: