2/7: Combining Like Terms

Combining (Add)

100

8a + 10a + 1a + 9

Answer: 19a + 9

200

5x + 35x + 3x + 2

Answer: 43x + 2

300

32 + 12t + 16t + 8

Answer: 40 + 28t

400

6p + 32 + 2 + 16p + 4p

Answer: 26p + 34

500

2m + 20n + 25m + 6n - 7

Answer = 27m - 14n - 7

Combining (Subtract)

100

20b - 10b - 12b

Answer: -2b

200

12c - 6c + 30 - 4

Answer: 6c + 26

300

5z - 55 - 26 - 1z

Answer: 4z - 83

400

-7d + 40d + 8d

Answer: 42d

500

-15j - 18k - 24j - 18k

Answer: 39j - 36k

Combining (Both)

100

-7w + 5 + 17w + 15

Answer: 10w + 20

200

19a + 6b - 17a - 9b

Answer: 2a - 3b

300

-2f - 1f + 6 + 5f

Answer: 2f + 6

400

-5r + 3q - 8q - 1r

Answer: -6r - 5q

500

53t - 20t + 17t

Answer: 50t

Like Terms OR Not Like Terms

100

Adding two negative numbers will give you....

a. A negative #

b. A positive #

Answer: A - negative number

200

Adding two positives will give you...

a. A negative #

b. A positive #

Answer: B - positive #

300

If you have a positive plus a negative number, you ADD both the numbers.

A. True

B. False

Answer: B - FALSE

400

-20 + 4 will give you a positive number.

A. True

B. False

Answer: B - FALSE

500

Adding a -10 + (-40) gives you a negative -50

A. True

B. False

Answer: A - TRUE