Adding and Subtracting Expressions

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.

(x + 9y + 5) – (-8x + 4y – 7)

• -7x + 5y + 12

• 9x + 9y + 12

• -7x + 13y + 12

• 9x + 5y + 12

Find the sum:
1/2 (4x + 4) + (2x + 8)

• -4x + 10 

• 4x + 10

• 6x + 12

• -6x + 12

Find the difference:
(2x + 7) - 3(5x - 4)

• -13x - 5

• 17x + 5

• 17x + 5

• -13x + 19

Find the difference: 
(x - 3) - 2(0.5x - 2) 

• -1

• 2x - 1 

• 2x + 1

• 1

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

• 3x + 5

• 3x + 8

• 2x + 5

• 2x + 8

(x + 4) + (3x + 9)

• 4x + 13

• 3x + 13

• 4x +5

(2x - 6) + (4x - 4)

• 6x + 10

• 6x - 10

• 6x + 2

Simplify (5x + 3) - (2x - 5)

• 3x + 8

• 3x - 2

• 7x + 8

• 7x - 2