1.3 PreAssessment

What are the like terms in this expression?  $5b\ -\ 6t\ +\ 4b\ -\ 7$  

• 5b and 4b

• -6t and 4b

• 5b and -7

• -6t and 4b

To simplify an expression, we _____________________.

• compound like terms

• combine like terms

• contain like terms

• constrain like terms

5x + 3x - 9

• 7x - 9

• 17x

• 8x - 9

• -x

8y + 5 - 2y

• 6y + 5

• 11y

• 10y + 5

• 15y

5(2x + 3)

• 10x + 3

• 10x + 15

• 25x

• 7x + 8

5a + 2b - 7b + 4a

• 7b - 3a

• 9a - 5b

• 4ab

• 12a + 6b

-5(n+4)+5n

• -5n-20+5n

• -20

• -5n + 4 +5n

• -5n +20 +20n

Simplify the following expression:

-6x + 4(x - 3)

• -2x - 12

• 10x + 12

• -10x - 12

• -2x + 12

Simplify the following expression:
x + 4 - 7(x - 5)

• -33x + 19
• -47x² +  21
• 33x - 19
• -6x + 39

Simplify:
3x - (x - 6) - 12

• 2x - 6
• 4x - 18
• 2x + 6
• 4x - 6