Determine If the Values Make an Equation True

Which of the values below will make 3 + x = 21 true?

• 19

• 7

• 24

• 18

Which of the values below will make 2x = 24 true?

• 6

• 12

• 4

• 2

Which of the values below will make x - 7 = -6 true?

• 13

• -13

• 1

• -1

Which of the values below will make 3x = 60 true?

• 16

• 2

• 18

• 20

Look at the equations below.

a. 3x = 24 b. x + 3 = 11 c. x - 14 = -6

Which of the equations in the list will be true when x = 8?

• c only

• a and b only

• None of the above

• All of the above

• 0

• 14

• 8

• 4

12x = 144

• x = 12
• x = 4
• x = 2
• x = 132

Which equation has x = 2 as a solution?

• 3 + x = 10
• 11 + x = 13
• 4x = 32
• 5x =25

y + 8 = 20

• 10
• 11
• 12
• 13

k - 10 = 7

• -3
• 3
• 17
• - 17