nothing to solve for, you have no variable in your "equation"
Btw, the left side ≠ right side
Solve 207=2.685sin(360/365 * 207)+12.175
2 answers
Going on the assumption that you meant
207=2.685sin(360/365 * x)+12.175
just follow the steps you learned in Algebra I.
194.825 = 2.685sin(360/365 * x)
72.561 = sin(360/365 * x)
Now we have a problem, since sin(x) is always less than 1.
So, fix your question, and give it a try. Come back with the steps you followed.
207=2.685sin(360/365 * x)+12.175
just follow the steps you learned in Algebra I.
194.825 = 2.685sin(360/365 * x)
72.561 = sin(360/365 * x)
Now we have a problem, since sin(x) is always less than 1.
So, fix your question, and give it a try. Come back with the steps you followed.