Defining the terms: constant, variable, term, and coefficient.

Simplifying expressions that contain like terms.

Example:

Simplify:

7x + 4x

5x

12y + 8x - 2y - 17x

2/5 x - 1/4 + 3/10 x - 5/2

Use the distributive property to simplify expressions.

Example:

Simplify:

7(2x - 4y)

Use the distributive property to simplify expressions.

Example:

Simplify:

5(2x - 3) - 8(4y - 7x - 3)

10 - 3(2x + 7y) + 4(5y - 6)

Defining "equation", "solving", and "solution".

The Addition Property:

a = b is equivalent to a + c + b + c or a - c = b - c.

Example:

Solve:

x + 21 = 58

The Multiplication Property

a = b is equivalent to ac = bc or a/c = b/c where c does not equal 0.

Example:

Solve:

2x = 10

8x = -60

The Addition Property:

a = b is equivalent to a + c + b + c or a - c = b - c.

Example:

Solve:

5x = -60

2/3 x = 20

-14/9 y = 56/81

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