Answer: x = 9
Step-by-step explanation: divide 2/3x by 2 and do that to both sides to get 1/3x = 3 then multiply by 3 to get the whole x. multiply on both sides to get x = 9.
So,
To find the percentage that the copper comprises, just divide the amount of copper by the total amount of metal in the coin. In this case, we will change the denominator so that it is 100, which can easily be converted into a percentage, which is really just a fraction out of 100.

75%
75% of the metal in the coin is copper.
B how many ways can they register for the same section
The rule seems to be to add 8. 10+8=18+8=26+8=34+8=42. I hope this helps!
I do not agree because 3/4 is greater than 2/3 so you can not do 3/4-2/3