Combing Like Terms, Fractions, Decimals, Parentheses

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Simplify the expression: 2x + 1 + 7x 

• 10x

• 10

• 9x + 1

• 9 + 1x

Simplify the expression: 7v + 2 + 12 + 2v

• 23

• 23v

• 9 + 14v

• 9v + 14

Simplify the following expression:
3 + 5x + 8 - 2x

• -3x² - 11

• 3x² + 11

• 11 - 3x

• 11 + 3x

Rewrite the following expression correctly.
4x + 3 + 3x + 8 + 4

• 12 + 24 + 4

• 15 + 7x

• 10x + 12

• 7x + 15

Simplify the expression: 3x + 2x

• 5x

• x

• 6x

• 5

Simplify the following expression
7 - 8c + 3 - 6c 

• -10+14c

• -25

• 10-14c

• 25c

Solve for x.

• x = 20

• x  = 90

• x = 45

-6k + 7k=

• k

• -k

• 12k

• -12k

Combine like terms
3x + 2x + 3y - 7y

• 5x + 10y

• 5x + 4y

• 5x - 4y

• 5x -10y