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Translate the following sentence into an equation. Then solve the equation


The difference of number and 7 is 21.


A.21- 7 = n; n=14

B.n + 7 = 21 ; n = 14

C.n - 7 = 21 ; n =28

D.21 - n = 7; n = 14

Answer :

Erudite1
The correct option is C.
The difference of a number and 7 is 21 implies that 
n - 7 = 21
To solve for n,
n - 7 = 21
n = 21 + 7 = 28
Therefore, n = 28.

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