Simplifying Expressions and Multi-Step Equations Review

We are learning to…simplify expressions and solve equations by isolating a variable.

Wednesday, April 19, 2023

Simplifying Expressions Review

When you are asked to simplify an expression we are looking for you to be able to: Combine like terms…pieces of a

mathematical expression which are exactly the same.

And then re-write and equivalent expression in “simplest form.”

Simplify the expression:2x + x2 – 3 + 3x – 3x2 – 1

Drawing:

x x

x2

x x x

x2

x2

x21

11 1

Create and Remove any Zero Pairs!And then write the write the expression in simplest form.

Expression in Simplest Form:5x – 2x2 – 4

Practice writing some expressions in simplest form.After you finish each question raise your hand so your teacher can check your solution.

Solving Multi-Step Equations Review

When you are asked to solve an equation we are looking for you to be able to: Combine like terms (if necessary) Then find the solution by isolating the

variable: First eliminate any units by adding or

subtracting Then multiply or divide to find the value of

one variable.

Solve the equation below:

=

x

x

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Record your steps:2 3 5x

2 3 3 5 3x

2 8x 2 8

2 2

x

4x 4x

Check your work:

2 4 5 5 8 3 5

5 5

2 3 5x Try practicing solving a few

equations with your team!

Writing Multi-Step Equations Review

When you are asked to write an equation we are looking for you to be able to: Use the given in the problem situation to

create an equation. Then use your equation solving skills to

find the solution to the problem situation.

Seth’s age is 7, which is 3 more than half of Regina’s age. How old is Regina?

Verbal Model: Define the variable(s):x = Regina’s age

3 72

x

Regina = Seth+ 3

2Mathematical Representation (as an equation):

Solve this equation with your teammates…raise your

hand when you are done.