Find the value of x from this equation? 7(x - 1) = 21
Choose the correct choice from the following
A) 2	B) 4	C) 6	D) 8	E) 10

Rationale: 1 . divide both sides by 7 : 2 . simplify both sides : x - 1 = 3 3 . add 1 to both sides : x - 1 + 1 = 3 + 1 4 . simplify both sides : x = 4 b
Answer: B