Answer: I think the last one sorry of I am wrong
Step-by-step explanation:
X=36 because 1/3 times 36 equals 12
It is true due to the commutative property of multiplication. If all of your operations are multiplication, then the integers can move around and you can still get the same answer.
^This is only true if you meant to type (1.8x3)x2.1=(1.8x2.1)x3
If you meant what you typed, then the equation is false. The left side would be 3 times the value of the right side due to the 3 being on the left side and not the right side while without the 3 the two sides would be equal.
135 because 45x3=135 at least I'm sure this is what you mean
One shirt cost $12 and and the other cost $24, because 12+12+12=$36
