For each of the following, find all possible whole-number replacements that make the following statements true.

123 = 7 • 17 + ______

1 answer

7 * 17 = 119

119 + what? = 123

well 123 - 119 = 4

so try 4

Does 123 = 119 + 4 ?
Yes, so 4 is the answer.