Expressions with Variables and Constants

This video tutorial teaches how to write variable expressions using diagrams. It covers combining like terms, handling constants, and using subtraction to find expression lengths. The video concludes with a final problem-solving example.

What is the expression for the length of the red line if 'D' is combined with 10?

• 10D

• D/10

• D - 10

• D + 10

If you have two 'n' terms and add four more, what is the total expression?

• 8n

• 2n

• 6n

• 4n

How many 'w' terms are there if you combine two, one, one, and two more?

• 4w

• 5w

• 6w

• 7w

What is the expression when a constant 14 is added to 'J'?

• J - 14

• J + 14

• 14J

• J/14

If the red line is shorter than the black line by 8, what is the expression?

• B - 8

• B + 8

• B/8

• 8B

What is the expression if the red line is shorter than the black line by 6?

• B - 6

• B + 6

• 6B

• B/6

What is the expression when two 's' terms are added to three units?

• 2s + 3

• 3s + 2

• 5s

• s + 5