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-6y - 4y - 9y

• -19y

• -10y - 9y

• 19

How many terms are in the expression
3x + 2y + z

• 5
• 2
• 4
• 3

The number in front of a variable is the _____.

• term
• constant
• coefficient
• variable

Simplify: 5p + 7y + 2t + 3p + 4y

• 21pyt

• 12p + 5t + 4y

• 8p + 11y + 2t

• 21y

Simplify: 5p + 7y + 2t + 3p + 4y

• 21pyt

• 12p + 5t + 4y

• 8p + 11y + 2t

• 21y

Like terms has the same __________, with the same exponent. Constants can also be combined with each other.

• constant

• coefficient

• variable

Which of the terms could be combined in the following expression:

3x + 7 - 9x + 24y + 2x²

• 7, 24y

• 3x, 9x

• 3x, -9x

• 3x, -9x, 2x²

Simplify: 4k + 6k - 3k + 3s - s

• 13k + 3s

• 7k + 2s

• 7k + 4s

• Can't be simplified