the sum of the tens digit and the hundreds digit of a 3 digit number is 3 times the unit digit. 1/5 of the sum of 3 digits is 1 less than the units digit

Brady has a 20 year fixed rate mortgage for $215,500 with monthly payments of 1,305.89.the annual interest rate is 4%. what is the total cost of the principal and interest for this loan rounded to the nearest dollar

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

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?