Mastering Linear Equations and Expressions 1

Solve for x: 2x + 5 = 15

• 7

• 10

• 0

• 5

Write an equation for: The sum of a number and 8 is 20.

• 20 - x = 8

• 8 + x = 20

• x - 8 = 20

• x + 8 = 20

Simplify: 3a + 4a - 2a + 5

• 3a + 2a + 5

• 6a + 5

• 4a + 5a - 2a

• 5a + 5

Solve for y: 3y - 7 = 2y + 5

• 12

• 5

• 15

• 10

Write an equation for: Five times a number is 45.

• x = 9

• 5x + 5 = 45

• 5x = 45

• 45 = 5 + x

Simplify: 2(x + 3) - 4(x - 1)

• 4x - 2

• -2x - 10

• -2x + 10

• 2x + 6

Solve for z: 4z + 3 = 2z + 15

• 10

• 4

• 8

• 6

Write an equation for: A number decreased by 12 equals 30.

• x + 12 = 30

• x - 30 = 12

• x - 12 = 30

• 12 - x = 30

Simplify: 5m - 3 + 2m + 7

• 3m + 10

• 2m - 3

• 5m + 4

• 7m + 4

Solve for p: 6p - 4 = 2p + 8

• -2

• 1

• 5

• 3