Algebra fun!

add like terms

100

a+a

2a

200

2a+3a

5a

300

a+2b+3a+4b

4a+6b

400

3a+7+4b+2a+7b+3

5a+11b+10

500

4x+x²+3x+x²+x

2x²+8x

subtract like terms

100

a-a

0

200

7x-3x

4x

300

-9y-3y

-12y

400

7a-4b-3a-2b

4a-6b

500

2x-x²-3x-4x²

-x-5x²

multiply terms

100

a x a 

a²

200

a x b x c

abc

300

3a x ab x c

3a²bc

400

2ab x 7abc

14a²b²c

500

-3a²b x 4ab²

-12a³b³

divide terms

100

a ÷ a

1

200

2a ÷ a

2

300

5a / 10a 

1/2

400

7xyz / 21yz

x / 3

500

-15z / -20z²

3 / 4z

Substitution

100

if a=2, evaluate 3a.

6

200

if a=2, b=3, evaluate 2a + b

7

300

if x=-1, y=2, evaluate x²+2x.

5

400

if x=3, y=-2, evaluate 4x - 2y.

16

500

if a=-3, b=-2, evaluate a² - b².

5