Question

Algebraic expression simplification using blocks.
What number will make the algebraic expressions represented by these models equivalent?

(1 point)
Responses

1
1

−2

negative 2

2
2

−1

Answer 1

I don’t see the block models — could you upload the picture or describe the blocks (how many variable blocks, how many positive unit blocks, how many negative unit blocks on each side)?

How to solve once you share it:
1. Let each rectangular variable block = x.
2. Count unit blocks on each side (positive vs negative) and write the algebraic expression for each model.
3. Set the two expressions equal and solve for the unknown number.
4. Check which of the given choices (1, −2, 2, −1) matches.

Example: if the left model is x + 2 and the right model is x − 1, set x + 2 = x − 1 → 2 = −1 (no solution). If instead the left is x + 2 and the right is 3 (no x on right), set x + 2 = 3 → x = 1.

Send the model and I’ll solve it and pick the correct choice.