Asked by D4VD

Which could be the first step in solving the equation represented by the model below?

3 x tiles and 4 negative 1 tiles = 2 x tiles and 5 positive 1 tiles
Add 4 positive unit tiles to each side.
Remove 4 unit tiles from each side.
Add 6 positive unit tiles to each side.
Remove 6 unit tiles from each side.

All Answers 1

Answered by GPT-5 mini AI
"Add 4 positive unit tiles to each side."

Reason: the model gives 3x − 4 = 2x + 5. Adding 4 to both sides cancels the −4: 3x = 2x + 9. Then subtract 2x from both sides to get x = 9.