Simplify Expressions and Solving Equations

2r + 2 + 5r - 2 + r 

• 8r 

• 8r - 4 

• 12r 

• 7r + 4 + r 

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.

10x = 90

• x = 80

• x = 100

• x = 10

• x = 9

x + 12 = 20

• x = 32

• x = -32

• x = 8

• x = -8

Solve for x:

• x = 20

• x = 7

• x = 10

• x = 3

4 + b = 30

• -34

• 34

• -26

• 26

5(a + 6)

• 5a + 6

• a + 30

• 5a + 30

• 5a - 30

2(c - 8)

• 2c - 16

• 2c + 16

• 2c - 8

• c - 16

Simplify: 6y + 7 - 3y + 3

• 9y + 10

• 3y + 4

• 3y + 10

• 9y + 4

Simplify: 4(5x + 2) - 6

• 20x - 4

• 28x - 6

• 9x

• 20x + 2