Adding and Subtracting Linear Expressions

Find (2x + 3) + (x + 4)

• 2x + x
• 12 + 3x
• 2x² + 12
• 3x + 7

(3x + 5) + (2x + 3)

• 6x + 15
• 6x + 8
• 5x + 8
• 5x + 15

2(x + 3) + (3x + 1)

• 6x + 4
• 5x + 4
• 5x + 7
• 6x + 7

5(x-4) + (2x-7)

• 3x - 28
• 5x + 2x -27
• 7x² + 11
• 7x -27

(x-1) + (2x+ 3)

• 3x + 2
• 2x² + 4
• 3x + (-2)
• 2x + 2

6(x+7) + (x+3)

• 2x + 21
• 7x + 10
• 42 + 45x
• 7x + 45

Find the difference:
(8 - u) - (5u + 1)

• 6u + 7 
• -4u + 7
• -6u + 7
• 4u - 7

The expression (8x + 4) inches represents the perimeter of a rectangle whose width is (3x − 4) inches. Find the length of the rectangle if x = 2.

• 7 in.
• 9 in.
• 8 in.
• 10 in.

(6x + 3y + 4) – (8x + 9y)

• -2x - 6y
• -2x - 6y + 4
• 2x + 6y + 4
• 14x + 12y + 4

(x + 9y + 5) – (-8x + 4y – 7)

• -7x + 5y + 12
• 9x + 9y + 12
• -7x + 13y + 12
• 9x + 5y + 12