HCF to factorising

Highest common factor of 10 and 15

• 1
• 5
• 30
• 150

Highest common factor of 100 and 80

• 1
• 10
• 20
• 800

Highest common factor of 7 and 9

• 1
• 63
• 7
• 9

Highest common factor of 2x + x

• 1
• 2
• x
• 3

Highest common factor of 2x + 6

• 1
• 2
• x
• 3

Highest common factor of 3x + 6

• 1
• 2
• x
• 3

Highest common factor of 20-5x

• 1
• 5
• x
• 10

Highest common factor of 3x + 12

• 1
• 2
• x
• 3

Highest common factor of 4x + 12

• 1
• 4
• x
• 8

Highest common factor of 3x + xy

• 1
• 4
• x
• 8