Answer
$15$
Work Step by Step
$5(2a+3)-10a\rightarrow$ apply distributive property
$10a+15-10a\rightarrow$ combine like terms
$15$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.