Simplify 3c-9d+7c+5d

Answer: [tex]10c-4d[/tex]Step-by-step explanation:The given expression is [tex]3c-9d+7c+5d[/tex]First of all we make groups of like terms as shown below.[tex](3c+7c)+(-9d+5d)[/tex]Now, we combine the like terms.[tex](3+7)c+(-9+5)d[/tex]On simplifying, we get[tex]10c-4d[/tex]Therefore, the simplified expression is [tex]10c-4d[/tex]