Combining Like Terms and Simplifying Expressions

The video tutorial explains how to simplify the expression 5x + 3 - 4x - 9 by grouping like terms. It starts by identifying and combining the like terms 5x and -4x to get x. Then, it groups the constants 3 and -9 to get -6. Finally, it combines the results to form the equivalent expression x - 6.

What is the first step in simplifying the expression 5x + 3 - 4x - 9?

• Group like terms

• Multiply 5x by -4x

• Subtract 9 from 3

• Add 5x and 3

When combining 5x and -4x, what is the resulting expression?

• 0

• 1x

• x

• 9x

What is the result of combining the constants 3 and -9?

• -12

• 6

• -6

• 0

Which of the following is an equivalent expression to 5x + 3 - 4x - 9?

• 5x + 6

• x + 6

• 5x - 6

• x - 6

Why is it important to group like terms when simplifying expressions?

• To make the expression longer

• To change the variables

• To simplify the expression

• To add more terms