Can someone please help me on the simultaneous question I don’t understand

Step-by-step explanation:
2 cups and 3 plates ...18/×5
5 cups and 1 plate...19/×2
10 cups and15 plates...90
10 cups and 2 plates...38
13 plates...52
1 plate.. 4
2 cups=18-12=6
1cup =3