Insert parentheses as needed in the expression in order to make it equal to 0. More than one set of parentheses may be needed.15 + 3 ? 2 - 7
A. 15 + 3 ? (2 - 7)
B. (15 + 3) ? 2 - 7
C. 15 + (3 ? 2) - 7
D. 15 + 3 ? 2 - 7
Answer: A
Mathematics
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In evaluating mathematics textbooks, Project 2061 considered their mathematics content as well as their implicit methods for teaching the content.
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