Question

how to solve 3y-5+4y-9

Answer 1

add the like terms, I am going to color them, so that you can see them.

\(\Large\color{red}{ \bf 3y }\)\(\Large\color{blue}{ \bf -5 }\)\(\Large\color{red}{ \bf +4y }\)\(\Large\color{blue}{ \bf -9 }\)

Answer 2

7y+14? so how do i know if i subract or add

Answer 3

3y and 4y are both positive so you add them which gives you 7y, then 5 and 9 are negatives but because of the plus sign before the 4y you would add them to make -14. the answer would be 7y - 14