Answer:
Step-by-step explanation:
menfnfnfncncnleoemellzlsld j
Multiple: 3 * 2 = 6
Subtract: 12 - 6 = 6
Multiple: 100 * 6 = 600
Add: 15 + 600 = 615
Add: 615 + 6 = 621
i believe it only has one solution, which would be x=12.