Ch 4_Pre-Alg (problems practice)

• addition

• distributive

• multiplication

• division

• 6

• -6

• 4

• -8

Simplify 15n - 4 + 2n

• 13n - 4

• -17n - 4

• 17n - 4

• 17n + 4

Which of the following expressions can be written as 7(a + b)?

• 7a + 7b

• (7 + a) - (7 + b)

• (7 + a) + (7 + b)

Choose the equation whose solution is graphed

• 3x + 19 = 4

• 4x - 19 = 4

• 2x + 11 = 4

Solve y + 7 = 20

• • - 13

• 12

• 13

• • - 4

• • - 20

• 6

• 7

• 20

• 5

• • - 6

• • - 11

• 7