Common EntranceMathematicsSimple Equations

If 5(x - 2) = 3x + 4, find x.

A6
B7CORRECT
C14
D3
AI
Toaster Teacher
Why the answer is B, and why the others tempt you.
5x - 10 = 3x + 4, so 5x - 3x = 4 + 10, giving 2x = 14 and x = 7.
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