If 5 vases and 2 placemats cost 51$ and 2 vases and 5 placemats cost 33$ how much does one placemat and 1 vase cost

Answer 1

5x+ 2y= 51

2x+ 5y = 33

10x+ 4y = 102

10x +25y= 165

21y= 63

y = 3

x= (33- 15)/2 = 9

x = 9 y=3

one of each together cost 9+3 = $12