Question

Which of the following is not a solution for the inequality 3x +2 < 12?

x = 2
x = 2.5
x = 3
x = 3.5

Answer 1

It will be 12-2=10, so 3X=10 —> so X=10/3. X=3

Answer 2

x = 3.5 is not a solution

Explanation:

3x +2 < 12

Subtract 2 from each side

3x +2-2 < 12-2

3x< 10

Divide each side by 3

3x/3 <10/3

x < 10/3

x <3.3333333

Any number greater than 3.3333 is not a solutions

3.5 is not a solution