Question

Solve the equation.
2x − 17 = 4

A. 7.5
B. 10.5
C. 11
D. 12.5

Answer 1

The answer is B) 10.5.

Here are the steps I used.

1. Add 17 to both sides ( 2x = 4 + 17)

2. Simplify 4 + 17 to 21 ( 2x = 21)

3. Divide both sides by 2 ( x = 21/2)

4. In decimal form its 10.5

Answer 2

Add 17 to both sides.

`2x - 17 + 17 = 4 + 17`
Now simplify by adding applicable things on both sides. You now have

`2x = 21`
Now divide both sides by 2 to isolate the x.

`x = (21)/(2)`
This is, in decimal form, 10.5; solution B.