Number Word Equations

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.

5 less than a number is 15.

• x - 5 = 15

• 5 - x = 15

• 15 - x = 5

Twice a number is 24.

• 2n = 24

• 2/n = 24

• 2 + n = 24

• 2 - n = 24

To solve n + 23 = 65 you would...

• add 23 to both sides of the equation.

• add 65 to both sides of the equation.

• subtract 65 from both sides of the equation.

• subtract 23 from both sides of the equation.

#1 Hello World

• # of tickets

• # of hours

• amount of money
• number of days

Hello World

• # of tickets

• # of hours

Hello World

• # of tickets

• # of hours

Penelope is going to the carnival to ride the rides. It costs $20 to get into the carnival and ride tickets are $0.50 each. Write an equation that represents this scenario if she spends $35 in all.

• .50x + 20 = 35

• .50x = 35

• .50 + 20x = 35 

• .50x - 20 = 35

Three students disagree about the best and fastest method to solve the equation shown in one step. Which one is correct?

• Rashad, who wants to multiply by 3

• Ruby, who wants to multiply by ⁵/₃

• None of the students are correct. They need to study their notes.

• Jess, who wants to divide by ³/₅