Question

which math expression means the sum of an unknown number and 15
A. 15 . X
B. x + 15
C. x - 15
D. 15 divided by x

Answer 1

B. sum means the answer to an addition problem. It is addition, an unknown number, X, and 15 is also in the equation.It has everything the problem is asking.

Answer 2

Answer:

B

Step-by-step explanation: