If (X - 1)/3 = K and k = 3, what is the value of x ? A) 2 B) 4 C) 9 D) 10

Question

Solve without calculator.

Answer 1

In this equation, you are given k, the question mentions that k=3.

Because of this, you can rewrite the equation from

(X-1)/3 = K

to

(X-1)/3 = 3

From here we can solve for X:

1) multiply both sides by 3 to get:

X-1 = 9

2) Add 1 to both sides to get:

X = 10

The answer is D) 10.

Answer 2

Since (X - 1)/3 = k and k = 3 replace k with 3 in the equation

(X - 1)/3 = 3 multiply 3 by both sides

3 (X - 1)/ 3 = 3 x 3

X - 1 = 9 add 1 to both sides

X - 1 + 1 = 9 + 1

X = 10