6. 5(n-5)+7n
SO you will have to do PEMDAS. Start by getting rid of the parenthesis.
5n-25+7n
Then add 5n +7n.
You will get 12n-25 as your final answer.
Do the same for the next ones.
8. -3(1-5n)+(4n+2)
-3+15n+4n+2
-1+15n+4n
-1+19n
10. -8(1-7r)-(2r+6) {the - before 26+6 means multiply everything in parenthesis by -1.}
-8+56r-2r-6
-14+54r
