Question

(3a+5b)+(9a-7b)+(-5a+116)

Answer 1

...=3а+5б+9а-7б-5а+116=7а-2б+116

Answer 2

(3a+5b)+(9a-7b)+(-5a+116) = 3а+5b+9a-7b-5a+116=7a-2b+116