Addition and Subtraction of linear expressions Flashcards by Christopher Chee

Q

What condition is necessary for addition and subtraction of algebraic expressions?

A

We can add or subtract like terms

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Q

Simplify the expression

2x + 3x

A

5x

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Q

Simplify the expression

4y + 5y

A

9y

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Q

Simplify the expression

6x + 3+ x

A

7x + 3

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Q

Simplify the expression

(2x + y) + (3x + 4y)

A

5x + 5y

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Q

Simplify the expression

6x - 2x

A

4x

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Q

Simplify the expression

12y - 10y

A

2y

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Q

Simplify the expression

3x - 2 - 2x - 1

A

First we combine the like terms

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Q

Simplify the expression

3x - 2 - 2x - 1

A

Finally

x - 3

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Q

Simplify the expression

7x + 2x

A

9x

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Q

Simplify the expression

7x + 2x + 2y

A

9x + 2y

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Q

Simplify the expression

7x + 2x + 2y + 4y

A

9x + 6y

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Q

Simplify the expression

7x + 2x + 2y + 4y + 3

A

9x + 6y + 3

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Q

Simplify the expression

7x + 2x + 2y + 4y + 3 + 2

A

9x + 6y + 5

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Q

Simplify the expression

7x - 2x

A

5x

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Q

Simplify the expression

7x - 2x + 9y

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A

5x + 9y

Q

Simplify the expression

7x - 2x + 9y - 5y

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A

5x + 4y

Q

Simplify the expression

7x + 9y - 2x - 5y

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A

We rewrite as

7x - 2x + 9y - 5y

= 5x + 4y

Q

Simplify the expression

7x - 9y - 2x - 5y

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A

We rewrite as

7x - 2x - 9y - 5y

= 5x - 14y

Q

Simplify the expression

7x - 9y - 2x + 5y

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A

We rewrite as

7x - 2x - 9y + 5y

= 5x - 4y