Solving Problems for X Variable on One Side Only

What is the missing number in the table?

• 12

• 10

• 14

• 13

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5

Which fraction busters would work to rewrite the equation without fractions?

Select all that apply.

• 4

• 6

• 9

• 12

What is the most important rule when solving equations?

• Always wash your hands.

• Whatever you do to one side of the equal sign, you have to do to the other.

• Pick the answer at random.

• Wait at least one hour after you eat.

What is the solution to the equation 3x - 5 = 7?

• x = 3

• x = 5

• x = 4

• x = 2

What is the first step in solving the equation 4(x + 2) = 20?

• Subtract 2

• Distribute the 4

• Combine like terms

• Divide by 4

How does algebra help in representing relationships between quantities?

• By avoiding equations

• By guessing randomly

• By using only numbers

• By using variables to represent unknown quantities

In the equation

x + 7 = 12

7 is being added to the variable, x.
How should you show your work to isolate the variable and solve the equation?

• Subtract 7 from both sides. The solution is x = 5.

• Add 7 to both sides.

  The solution is x = 19.

• Multiply both sides by 7 The solution is x = 84.

Simplify the following expression:
-8x + 4x

• -12x

• -4x

• 4x

• 12x