Nate solves the equation ? *5=15 by writing and solving 15/5=3 explain why nates method works

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

What are “like terms”? why can we only add like terms?

Ftara spends $219 a month for her car payment and she makes $3,200 a month, what percent of her monthly income is spent on her car payment?