Task: Simplify the expression: 3(x + 4) − 2(x − 1). Write your answer with like terms collected.
Rebuild the answer: model on the left, hint on the right. Then pick your choice-board level.
Model · Step 1
Expand 3(x + 4) → 3x + 12
Hint
Multiply 3 by x and by 4.
Model · Step 2
Expand −2(x − 1) → −2x + 2
Hint
Watch the minus: −2 × (−1) is +2.
Model · Step 3
Line up: 3x + 12 − 2x + 2
Hint
Write all terms in one row.
Model · Step 4
Collect x terms: 3x − 2x = x
Hint
Group letters that match.
Model · Step 5
Collect numbers: 12 + 2 = 14
Hint
Add the constant parts.
Model · Step 6
Final answer: x + 14
Hint
One x term and one number.