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OpenStudy (anonymous):
The sum of two numbers is 57. One of the numbers is 21. Which of the following equations could be used to find the other number? 57 = n + 21 n = 57 + 21 57 = 2 + 21 Not Here 21 = n – 57
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OpenStudy (agreene):
57 = n + 21
Directrix (directrix):
57 - 21 = n
Directrix (directrix):
This will work: 57 = n + 21
OpenStudy (anonymous):
57=n+21
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