Task: Solve for x: 2x + 5 = 17. Show each step and check your answer.
Rebuild the answer: model on the left, hint on the right. Then pick your choice-board level.
Model · Step 1
Start: 2x + 5 = 17
Hint
Copy the equation clearly.
Model · Step 2
Subtract 5 from both sides → 2x = 12
Hint
Do the same to both sides.
Model · Step 3
Divide both sides by 2 → x = 6
Hint
Undo the ×2 on x.
Model · Step 4
Check: 2(6) + 5 = 12 + 5 = 17 ✓
Hint
Plug x = 6 back in.