Basics of Algebra: Adding and Subtracting Like Terms

The video reviews algebra basics, focusing on constants, variables, and expressions. It uses a stationery example to explain combining like terms and introduces methods for adding and subtracting expressions. The importance of like terms is emphasized, and practice questions are provided to reinforce learning.

Which of the following is NOT a basic component of algebra?

• Constants

• Variables

• Expressions

• Fractions

In the example with stationery items, what does the variable 'y' represent?

• Erasers

• Notebooks

• Pencils

• Markers

What is the first step in the horizontal method of adding expressions?

• Write expressions in a vertical column

• Combine like terms

• Write expressions in a horizontal line

• Subtract unlike terms

If you have 8 pencils and give away 2, how many are left?

• 6 pencils

• 10 pencils

• 4 pencils

• 8 pencils

What mistake did the narrator make while opening the bracket in the subtraction example?

• Forgot to subtract 5

• Forgot to change the sign of y

• Forgot to add y

• Forgot to subtract x

Why can't you add pencils and erasers together in algebra?

• They are not numbers

• They have different colors

• They are not like terms

• They are different types of stationery

What is the result of subtracting 8x + 8 from 11x?

• 19x

• 3x + 8

• 11x - 8

• 3x