Question

Find the value of x if 30 − x = 4x

Answer 1

1. rearrange terms
2. subtract 30 from both sides
3. subtract the numbers
4. subtract 4x from both sides
5. simplify the expression
6. divide both sides by the same factor
7. simplify the expression

Answer: x = 6

Answer 2

`30 - x = 4x \\ 30 = 4x + x \\ 30 = 5x \\ x = (30)/(5) \\ x = 6`