How to you simplify to the lowest term with fractions

Find the difference (8ab+a+2) - (3ab+6)

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.