Which pair of expressions is equivalent? 27x + 45y and 7(9x + 7y) 2x + 18y and 2(x + 9y) 2(15x + y) and 30x + 15y 10(4x + 5y) and 20x + 10y

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?