Advanced Math practice question

Answer: 25

6a − 3b = 3(2a − b) = 3 × 7 = 21, so 6a − 3b + 4 = 25.

Common wrong answers

If you answered 7

7 is the given value of 2a − b.

If you answered 11

11 adds 4 to 7 without tripling first.

If you answered 21

21 is 6a − 3b without the +4.

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