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Adding & Subtracting Linear Expressions · Easy Worksheet 2

Adding & Subtracting Linear Expressions — Easy Worksheet 2

Grade 7 · MathSheets    Name: ____________________   Date: __________

Simplify each expression. Write the x-term first, then the y-term, then the number, like 2x + 11.

How to solve

To add linear expressions, drop the parentheses and combine like terms: (3x + 4) + (2x - 7) = 5x - 3. To subtract, change the sign of every term in the parentheses being subtracted, then combine: (3x + 4) - (x - 7) = 3x + 4 - x + 7 = 2x + 11. A number in front of the parentheses multiplies every term inside first: 2(x + 3) - (x - 1) = 2x + 6 - x + 1 = x + 7. "Subtract A from B" means B - A.

Example

Simplify: (3x + 9) + (6x + 9)

Answer: 9x + 18

right so far
1. Simplify: (6x - 3) + (7x + 2)
2. Simplify: (6x - 3) - (2x - 7)
3. Simplify: (5x - 4) + (6x + 8)
4. Simplify: (7x + 5) - (3x - 3)
5. Simplify: (3x + 7) - (x - 2)
6. Simplify: (7x - 8) + (4x + 8)
7. Simplify: (3x - 5) - (x + 10)
8. Simplify: (7x + 3) - (x - 9)

/ right