Which value for x makes the sentence true?
21x = 630
A.
609
B.
651
C.
30
D.
13,230
The correct answer is C. 30.
To solve the equation 21x = 630, we divide both sides by 21.
21x/21 = 630/21
x = 30
Therefore, the value for x that makes the sentence true is 30.