Answer:
4b - 18
OR
2(2b - 9)
Explanation:
Simplify the expression. Start by expanding, then collect like terms.
-6b + 2(5b - 9) Use the distributive property.
Multiply the number outside of the brackets with each of the terms inside of the brackets.
= -6b + 2*5b - 2*9 Multiply 2 (outside) with each term inside
= -6b + 10b - 18 Collect like terms (numbers with same variable)
= 4b - 18 Simplified expanded form
Some questions ask you to further simplify, which means they want to answer in a different form.
Factor this expression. Start by looking for a common factor.
4b - 18 What number can both terms divide by? 2
2 is the common factor. "Take it out" like this:
= 2( 4b/2 - 18/2) Divide each term by 2, take it outside of brackets.
= 2(2b - 9) Simplified factored form
