Cuanto es 2x2 divididi entre 2

The sum of two numbers is 86, and their difference is 20. find the two numbers

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?