need equations step by step

Question

Abby is selling lemonade and cookies. She charges $0.75 for each cup of lemonade and $0.35 for each cookie. Last weekend, Abby sold 5 more cups of lemonade than cookies. She earned $7.05 altogether. How many cups of lemonade did Abby sell last weekend?

Answer 1

L= 5 + C

L-C =5

.75L - .75C = 3.75

.75L + .35C = 7.05

subtract to get

-1.1C = -3.3

C = -3.3/-1.1 = 3 cookies

L = 5+3 = 8 lemonades