One way is to move the 4 to other side so it would be x = 13 - 4 and that's x = 9
Answer:
81
Step-by-step explanation:
i added it all

To raise 4x/y to a power, raise the numerator and denominator to the power, and then divide.

Expand (4x)².

Calculates 4 to the power of 2 and gets 16.
