20
Thirty
get a new calculator
6x + 5
Yes it does
5+5+5+2 = 17
10
4 + 5 + 8 is equal to 17
555 plus 5 plus 556 is equal to 1,116
4b plus 7b plus 5 will equal 11b plus 5. When you have two variables that are the same you can add the two numbers with the variables remaining the same.
5+5 = 10
3 plus 5 is equal to 8.