Finding the value {ACT}

If 4x - 2 = 14, what is the value of 2x - 1 ?
(A.)  8
(B)  7
(C)  6
(D)  5
(E)  4

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4x - 2 = 14
4x = 16   {added 2 to each side}
x = 4   {divided each side by 4}

2x - 1
= 2(4) - 1   {substituted 4 in for x}
= 8 - 1  {multiplied}
= 7   {subtracted}

D.)  7


- Algebra House