One Step and Two Step Equations

15 = 2a + 7

• 2

• 4

• 12

• 14

What is a one-step equation?

• A problem where multiple operations are present.

• A problem where the variable is missing.

• An equation where only one step (operation) is needed to solve it.

• An equation where two steps (two operations) are needed to solve it.

What is a two-step equation?

• An equation where two steps (or operations) are needed to solve it.

• An equation where only one step is needed to solve it.

• A problem with only one operation present.

• A problem where you find the square-root of a number.

Solve for x:

• x = 20

• x = 7

• x = 10

• x = 3

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 

• Subtract 62 from each side.

• Multiply each side by 62.

• Add 123 to each side.

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides

• Subtract 11 from both sides

• Add 11 to both sides

• Divide 3 on both sides.

Figure out what n equals in this equation:
6n + 4 = -26

• n=-6

• n= -5

• n= 8

• n= -4

In the equation 4p = 20 the variable, p, is being multiplied by 4. How should you show your work to isolate the variable and solve the equation?

• Multiply both sides by 4.
  The solution is x = 80.

• Subtract 4 from both sides. 
  The solution is p = 16.

• Add 4 to both sides. The solution is p = 24.

• Divide both sides by 4. The solution is p = 5.

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5

• Add 6 to both sides and multiply both sides by 5

• Subtract 6 from both sides then multiply both sides by 5

• Subtract 6 from both sides then divide both sides by 5

Solve the equation:
-5x = 25

• x = 20

• x = -20

• x = -5

• x = 5