Finding Solutions to Equations and Inequalities

Tell whether the value of the variable is a solution to the equation:

3x=12; x=4

• yes

• no

Tell whether the value of the variable is a solution to the equation:

7 = 13 - n; n=5

• no

• yes

• yes

• no

Which is the solution to x+5=8

• x=2
• x=3
• x=4
• x=5

Which of these are solutions to the equation?

5x + 10 = 30

• 0

• 2

• 5

• none of these

Does the given value make the inequality true?  x + 9 > 21, when x = 15

• Yes, it is a solution.
• No, it is not a solution.

Which value will satisfy the inequality?
x + 5 ≤ 13

• 8
• 18
•  65
• There is no solution.

Which value will satisfy the inequality?
3g >12

• 4
• 3
• 36
• 0

For which equation is x = 5 a solution?

• 2 + x = 3

• 3x = 15

• x - 7 = 12

Which of the following is an equation?

• 9 - 2

• 7 + y