Question

Simplify the expression by combining any like terms.
2b-3-9b-5

Answer 1

2b-3-9b-5
2b-9b-3-5
-7b-8

Answer 2

-7b-8

Explanation:

Hi there!

We are given the expression 2b-3-9b-5 and we want to simplify it by combining like terms

Like terms are terms that have the same variables (ex. 2x and x are like terms, -3 and 6 are like terms. However, x and x² are not like terms, neither are -3x and 8)

We can bold or underline the like terms to make it easier. Remember to include the sign, as those are important:

2b -3 -9b -5

Now add 2b and -9b together:

2b+ -9b= -7b

Now add -3 and -5 together

-3 + -5 = -8

Add -7b and -8 together

-7b + -8 = -7b-8

As -7b and -8 aren't like terms, we have to leave the expression as -7b-8.

Hope this helps!