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Remember when you first learned your ABC's - you learned a is for apple, b is for ball, etc.

Math also uses ABC's, but they are called variables.

With numbers:

1 always means 1 item,

5 always means 5 items

Hard Part:

Variables value can change, not like numbers. That is why vary is the first part of their name .

With Variables -

Sometimes the value of the variable is given.

Sometimes the value of the variable is not given.

For example:

The expression could say - simplify (think solve) for b = 9

1) 2b (submitting 9 for b)

becomes 2(9) = 18

or

The expression could say - simplify (think solve)

1) 7n + 5 - 4n - 8

when like terms are combined

becomes 3n - 3

Everything you can do with numbers you can do with variables,

+

Substituting c (a variable) for the cherry

c + c = 2c

2 cherries - just like with numbers only

If b = 3 bananas

2b would simplify into

2() or 6

If you had any problems in the past with fractions, especially multiplying or dividing, go back and review that material.

Knowledge of fractions is useful when solving equations

Write Algebric Expression - Division

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