You gave the equation right at the beginning. It's [ 52 x = 7,800 y ].
As you requested, I'll proceed now to solve your equation for 'x'.
I'll go slowly, and explain each step clearly. Please try to follow
along with my procedure.
Step #1:
Write down the equation: 52 x = 7,800 y
Step #2:
Divide each side of the equation by 52 : x = 7,800 y / 52
Step #3:
Perform the division indicated by the fraction, and underline the answer.
x = 150 y