Combining Like Terms

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

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

A coefficient is __________.

• the variable
• a constant
• an exponent
• the number that comes before the variable

How many terms does this expression have?
-18y + 7yz - 4z

• -18
• 3
• 7
• -4

Simplify: x + 3x + 6x + x

• 9x

• 11x

• 2x + 9x

• Can't be simplified

Simplify: 7t - 3t + t - 3t

• 2t

• 8t - 6t

• 14t

• Can't be simplified

Simplify: 4q + 4t + 3q + t

• 12tq

• 3q + 4t

• 7q + 5t

• Can't be simplified

Simplify: 10w + 3d + 3w + d

• 13w + 4d

• 17wd

• 13w + 3d

• Can't be simplified

Simplify: m + m + m + m

• 4m

• m⁴

• m

• Can't be simplified

A variable can be _______?

• Any number

• Any letter of the alphabet

• only X

• only 1

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

• 23
• 23v
• 9 + 14v
• 9v + 14