Advanced Math practice question

Answer: 1

c = 3. Then a + b + 3 = 0 and a − b + 3 = 8; adding gives 2a + 6 = 8, so a = 1.

Common wrong answers

If you answered 3

3 is c.

If you answered 4

4 is a − b + 3 − 7, a slip; 2a = 2.

If you answered -4

−4 is b.

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