You must try to remove one of the unknown variables from the system by multiplying one in a way that when adding (or subtracting) one to another “makes it disappear” and so whatever value you get can be substituted back in to get the other unknown!
Refer to cy math.com they have the answer
Answer:
180
Step-by-step explanation:
you multiply 10 times 6 times 3
It's as easy as I solved it