Expressions & Equations Study Guide (7)

Simplify:
[25-(13+4)+4] ÷ 3

• 6
• 2
• 3
• 4

Find and explain the error.

5 - 3 + 2

5 - 5

0

• There is no error.

• Addition was done first and you should have subtracted first

• They added wrong numbers

• Multiplied worng

Evaluate when a = 15:
2(a - 5) + 2

• 22
• 27
• 14
• 7

Evaluate 4w - 3y if w = 7 and y = 6

• 24

• 21

• 10

• 46

2. Simplify the algebraic expression by combining like terms

6y - 8y

• -2y

• 2y

3. Simplify the algebraic expression by combining like terms

-5x -5x

• 0

• -10x

• 10x

7. Simplify the algebraic expression by combining like terms

-9x - 5 - 8 + x

• - 10x - 13

• - 8x - 13

Distribute:

3(9x - 5)

• 27x - 15

• 15 - 27x

• 27x + 15

• 27 + 15x

9n + 10(1 - n)

• -n + 10

• -n + 8

• -20n - 88

• -20n - 97