i need to find the value of this algebra problem

FratBro23
Category:
Mathematics
Price: $5 USD

Question description

2*m-3(m+5)-15

it tells me that m=10 but im not sure of how to get the answer because i do my work and get -20 but when i recheck my work i get -40 could you tell me how to work the problem?

Tutor Answer

(Top Tutor) Daniel C.
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School: Rice University
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