Need help 1st one : 12=12 , 12= 14, x = 4 (choose )

2nd one : no solution, one solution , infinitely many solutions ( choose )

3rd one : is exactly one value, is no value, are infinitely many values ( choose )

Look at attachment. has all info needed. need

How to solve a simultaneous equation involved with fractions?

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.