Advanced Mathematics Primary 6 Algebra

Simplify 3(2x + 4) − 5x + 1.

A x + 13
B x + 12
C x + 8
D x + 5
Show Worked Solution

Worked Solution

Step 1: Expand the bracket: 3(2x + 4) = 6x + 12. Step 2: Rewrite the full expression: 6x + 12 − 5x + 1. Step 3: Collect x terms: 6x − 5x = x. Step 4: Collect constant terms: 12 + 1 = 13. Answer: x + 13.

Correct answer: x + 13

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