Mathematics Knowledge

Solve for x Answer

 

As an ASVAB tutor, I focus on various subtopics in Mathematics Knowledge.  Algebra is an important skill to know for the Mathematics Knowledge section of the ASVAB.  One of the subtopics I review within algebra is solve for x.

Yesterday I presented an example for Mathematics Knowledge which involves solving for x.

The question asks us to solve for x.

5(x+1) = 3(x+3)

  1. X = 0
  2. X = 1
  3. X = 2
  4. X = 3

In order to solve this problem, first it is necessary to work on distribution.

5(x+1) = 3(x+3)

5x+5 = 3x +9

Subtract 3x from both sides

2x + 5 = 9

Subtract 5 from each side.

2x = 4

Divide both sides by 2.

X = 2

The answer is choice C. x = 2.