Algebraic Expressions. Practice #1

Evaluate the expression –4n + 2m – 16 if n=5 and m=3

• 10

• -24

• -30

• -42

Simplify the expression: 5x + 2y – 3 – 7x + 5

• -2x + 2y + 2

• -2x + 5y + 5

• 5x + 2y + 5

• -2x +2y -5

Simplify the expression –7a + 5b + 4 –3a – 2b + 6

• -4a + 5b + 10

• –10a - 3b – 10

• -10a + 3b + 10

• 4a - 3b + 6

Evaluate the expression -6x + 10y + 22 when x=2 and y=(-1)

• 0

• 20

• -22

• 44

Simplify the expression (-3)x + (-3)(-12)

• 9x + 12

• -3x + 36

• 3x – 36

• –108x

Simplify the expression 5x + (x + 6) + 3x

• 8x + 6

• 6x + 9

• 9x - 6

• 9x + 6

 Evaluate y(x + 10)   for y = 3.2 and x = 5

• 15.2

• 18.2

• 26

• 48

Select the expression that is equivalent to 2(x +9) when using the commutative property.

• (x + 9) - 2

• (x + 9)2

• 2 + (x +9)

• 9(x + 2)

• 7x–2

• 7x+2