To solve these equations, we need to isolate the variable x by performing the necessary operations on both sides of the equation.

(847+x) - 307 = 694
Subtract 847 from both sides:
x - 307 = -153
Add 307 to both sides:
x = 154

498 + (202 - x) = 564
Simplify the expression within the parentheses first:
498 + 202 - x = 564
Combine like terms:
700 - x = 564
Subtract 700 from both sides:
-x = -136
Divide by -1 to solve for x:
x = 136

(762 - x) - 392 = 215
Simplify by adding or subtracting within the parenthese first:
762 - x - 392 = 215
Combine like terms:
370 - x = 215
Add x to both sides:
370 = x + 215
Subtract 215 from both sides:
x = 155

Therefore, the solutions to the equations are: