Question 723811
5k -(3k-10)


is the same as


5k -1(3k-10)


----------------------------


5k -(3k-10)


5k -1(3k-10)


5k -1(3k)-1(-10) ... distribute (remember to distribute the -1 to EVERY term inside the parenthesis)


5k - 3k + 10


2k + 10