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highest common factor
factorising
like terms or not like terms
combining like terms
100

6(x+5)

6x+30

100

30 and 60

30

100

12x + 30

6(2x+5)

100

15x and 13a

not like terms 


100

45x + 32x + 1x =

45x + 32x + 1x =78x

200

5(x+10)

5x+50

200

2 and 8

2

200

10x+20

10(1x+20)

200

1a and 59a

like terms 

200

22x + 20x - 30x =

22x + 20x - 30x =12x

300

10(x+20)

10x+200

300

500 and 1000

500

300

15x+25

5(3x+5)

300

11a, 79a, 54x, 32a

not like terms 

300

10x + 78x - 84x =

10x + 78x - 84x = 4x

400

30(x+40)

30x+1200

400

10 and 20

10


400

30x+50

10(3x+5)

400

22x, 72x, 45x

like terms 

400

13x - 11x + 57x =

13x - 11x + 57x = 59x

500

7(x+10)

7x+70

500

35 and 50

5

500

2x+8

2(1x+4)

500

17a, 41a, 61x

not like terms 

500

100x - 99x =

100x - 99x = 1x