Multi Step Equations Finding Angles

Set up an equation that will help you solve for x.

• 60 + 75 + 180 = x

• 60 + 75 + x = 180

• 60 + 75 = x

• 60 + x = 75

Set up the equation to solve for x

• 8x + 2 +70 + 60 = 180

• 8x + 2 = 180

• 8x + 2 = 70 + 60

• 70 + 8x + 2 = 60

Set up the equation to find the missing angle

• 40 + 90 = x

• 40 + 90 + x = 180

• 180 = 40 - 90

• x + 40 + 40 = 180

Set up the equation to solve for the missing angle

• 50 + 120 + x = 180

• x + 50 = 120

• 120 + 50 = x

• x + 120 = 50

Look at the diagram.

Which equation can be used to solve for x?​ (a)  

• 3x+36=90

• 39x=90

• 3x+36=180

• 39x=180

Tags

7.11.C

Given right angle, LON, solve for x. Remember, a right angle has 90 degrees.

• 24

• 10

• 66

• 90

Set up an equation to find the missing angle

• 50 + 115 = x

• x + 50 + 115 = 180

• x + 50 = 115

• 50 + x = 180

Set up an equation that will help you solve for x

• x + 21 = 34

• 21 + 34 + x = 180

• 21 + 34 = x

• 34 + x = 21

Set up an equation that will help you find the missing angle

• 80 + x = 110

• 80 + 110 + x = 180

• 110 + x = 80

• 80 + 110 = x

Set up an equation that will help you find the missing angle

• 58 + x = 28

• x + 28 = 58

• 28 + 58 + x = 180

• 28 + 58 = x