Preparing for Algebra

Which of the expressions below is equivalent (same)?

• 7b - 3a

• 9a - 5b

• 4ab

• 12a + 6b

Simplify by combining like terms:

3x + 4xy - x + 3xy

• 9xxy

• 4x + 7xy

• 2x + 7xy

• 2x+xy

Simplify the expression.

-4(9 + 3x) - 4(x - 2)

• -16x - 28

• -16x - 44

• 20x - 12

• 30x - 9

Combine like terms
3x + 2x + 3y - 7y

• 5x + 10y

• 5x + 4y

• 5x - 4y

• 5x -10y

Solve:

• 6

• 5

• -5

• 6

What is the coefficient of x if it is simplified?

What is the expression that represents this pattern?

Write with no spaces.

If I need 21 squares to make the pattern what stage is it?

Solve for n: \frac{8}{n}\ =\ 4

• 32

• 4

• 2

• 8

Solve for p: \(\frac{p}{2\ }-1\ =\ 1\)

• 4

• 1

• 2

• -1