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If 3x + 12 = 21, then x + 4 =
A. 3
B. 4
C. 5
D. 7
E. 9
OA D
Source: Princeton Review
A. 3
B. 4
C. 5
D. 7
E. 9
OA D
Source: Princeton Review
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One option is to first solve the equation, 3x + 12 = 21, for x, and then determine the value of x+4.BTGmoderatorDC wrote:If 3x + 12 = 21, then x + 4 =
A. 3
B. 4
C. 5
D. 7
E. 9
Dividing the given equation by 3, we have:BTGmoderatorDC wrote:If 3x + 12 = 21, then x + 4 =
A. 3
B. 4
C. 5
D. 7
E. 9
OA D
Source: Princeton Review



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