Question

Tell whether x = 6 is a solution of x- 1<7.
yes
no

Answer 1

yes

Explanation:

1. Plug 6 in for x

6 - 1 < 7

2. Simplify

5 < 7

3. Since it is true that five is less than seven, the answer is yes.

Answer 2

x=6 is a solution

Explanation:

x- 1<7

Add 1 to each side to isolate x

x- 1+1<7+1

x < 8

Substitute x =6 into the inequality and see if it is true

6 <8

This is true so x=6 is a solution