Some Algebra Review

Substitution

100

Solve when x=4

x+5

9

200

Solve when x=6, y=7

y(x+6)

84

300

Solve y=3

6y²-y

51

400

p=-6, q=2, r=-3

4(p²-q)-5r

151

500

p=-6, q=2, r=-4

(p²-q²)/r

-8

Factorising

100

Find HCF of 15a and 10

5

200

Find HCF of 20a²b and 10ab

2ab

300

Factorise 4a+8

4(a+2)

400

Factorise 12st-14t

2t(6s-7)

500

Factorise 24efg²+32fg⁷h³

4fg(6eg+8g⁶h³)

Order of Operations

100

Simplify the following expression:

62

https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-order-of-operations/v/introduction-to-order-of-operations

200

Simplify the following expression:

5

https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-order-of-operations/v/introduction-to-order-of-operations

300

3 + 4² * (3 + 2)

83

400

45

500

30

Distributive Property

100

8(4+2) 

48

200

5(x - 3)

5x - 15

300

7 + 9(2x + 3)

18x + 34

400

3(x - 10)

3x - 30

500

x + 10 + 6(x + 2) 

7x + 22

Adding Like Terms

100

Simplify: 

2x + 8x=

10x

200

Simplify: 

4x + 3 + 2x + 8x

14x + 3

300

Simplify: 

3x + 2x + 5 - 2

5x + 3

400

Simplify: 

4x + 2x + 6 +3

6x + 9

500

Simplify: 

2(x + 4) + 5x

7x + 8