Question 1

2x + 5x

Accepted Answer

7x

Answer

8x

Answer

6x

Answer

3x

Question 2

13y - 7y

Accepted Answer

6y

Answer

20y

Answer

5y

Answer

7y

Question 3

11a + 3b + 2a + 5b

Accepted Answer

13a + 8b

Answer

112a + 35b

Answer

14a + 7b

Answer

9a - 2b

Question 4

6m + 4n - 3m - 4n

Accepted Answer

3m

Answer

9m + 8n

Answer

3m + 8n

Answer

9m

Question 5

Which of the following is an expression?

Accepted Answer

11p + 3q + 2r

Answer

7x - 4y + 2z = 0

Answer

5xy - 3x = 1

Answer

2x + 3y = 4

Question 6

3c - 7d + 10d + 8c

Accepted Answer

3d + 11c

Answer

3d + 5c

Answer

11c - 17d

Answer

11c + 17d

Question 7

11p - 4q - 11p + 4q

Accepted Answer

0

Answer

22p + 8q

Answer

8q

Answer

22p

Question 8

16n + 13m + 9 - 8m + 2 - 11n

Accepted Answer

11 + 5m + 5n

Answer

27n + 5m + 7

Answer

7 - 27m + 21m

Answer

5n - 11 + 21m

Question 9

11 - 3a - 4 + 12b

Accepted Answer

7 - 3a + 12b

Answer

8a + 8b

Answer

15a + 7

Answer

15 + 3a + 12b

Question 10

7ap + 4pa + 9ap + 3pa

Accepted Answer

23ap

Answer

11ap + 14pa

Answer

16ap + 8pa

Answer

11ap + 11pa

Question 11

8rs  - 5rs - 2rs + rs

Accepted Answer

2rs

Answer

15rs

Answer

10rs

Answer

3rs

Question 12

Expressions can only be _________________ not __________________.

Accepted Answer

simplified, solved

Answer

counted, simplified

Answer

re-arranged, simplified

Answer

solved, simplified

Question 13

29abcd - 14bcda - 12cdab

Accepted Answer

3dabc

Answer

cannot be simplified

Answer

4dabc

Answer

2dabc

Question 14

An expression only becomes an equation when _____________________.

Accepted Answer

it has an equal sign

Answer

it doesn't matter

Answer

it has a question mark

Answer

it has two unknown variables

Question 15

20tuv - 11vtu + 7utv

Accepted Answer

16utv

Answer

15vtu

Answer

2tvu

Answer

37utv

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