Lesson: Addition and Subtraction of Algebraic Expressions Mathematics • 7th Grade

In this lesson, we will learn how to add and subtract algebraic expressions by adding and subtracting like terms.

Lesson Plan

Students will be able to

form an addition or subtraction expression to represent a given word problem,
combine like terms while adding or subtracting algebraic expressions to simplify them,
solve problems that involve the addition or subtraction of two or more algebraic expressions by using the horizontal method and by using the vertical method,
add or subtract algebraic expressions to solve geometric problems.

Q1:

Simplify .

Q2:

Using the vertical method, subtract the following algebraic expressions:

Q3:

Find given and .