16Hit1600
Advanced MathEasyConstant in a sum of binomials

Advanced Math practice question

The sum (x + 4) + (x − 1) simplifies to 2x + c, where c is a constant. What is the value of c?

Answer: 3

4 + (−1) = 3.

Common wrong answers

If you answered 4
4 forgets to include the −1.
If you answered 5
5 adds 4 and 1, ignoring the minus sign.
If you answered -3
−3 has the sign reversed.

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