Writing and Solving Equations

Solve the equation:
4p = 16

• p = 12
• p = -12
• p = -4
• p = 4

Solve the equation
3x = 27. 

• x = 24
• x = 81
• x = 9

When solving an equation, our goal is to:

• add all the numbers together.
• use a calculator.
• eat lunch.
• isolate the variable to solve.

• a
• b
• c
• d

When solving 234 + N =389, what operation would you use to find the answer

• multiplication
• addition
• subtraction
• division

Translate: 5 less than a number, x, is 15.

• 5 - x = 15

• 15 - 5 = x

• x - 5 = 15

• 15 - x = 5

What is the difference between an expression and an equation?

• expressions have an equal sign and equations do not have an equal sign

• expressions do not have an equal sign and equations do have an equal sign.

• expressions do not have variables and equations have variables

• there is no difference

Write the word sentence as an equation.

The sum of a number a and 17 is 21

• 
  

  $\frac{a}{17}=\ 21$

• $a+17\ =\ 21$

• $a+21=17$

• $21+17\ =\ a$

Which of these is an equation?

• 4x - 7

• 5 - 6t

• 7x = 49

• 43b - 9

When solving an equation, the goal is to

• get the variable by itself

• add all the numbers together

• multiply

• make a graph