Question

Susan's math teacher assigned x homework problems on Monday. On Tuesday, she assigned 13 more problems. Over the two days, a total of 23 homework problems were assigned. Which equation could be used to find x, the number of problems assigned on Monday?

Answer 1

Let Tuesday's problems be x + 13 (13 more than Monday). The total is
x + (x + 13) = 23,
which simplifies to 2x + 13 = 23. Solving gives 2x = 10, so x = 5.