(54+28)-x=39

To solve the equation \((54 + 28) - x = 39\), follow these steps:

1. First, simplify the left side of the equation: \[ 54 + 28 = 82 \] So the equation becomes: \[ 82 - x = 39 \]

2. Next, isolate \(x\) by subtracting 82 from both sides: \[ -x = 39 - 82 \] \[ -x = -43 \]

3. Multiply or divide by -1 to solve for \(x\): \[ x = 43 \]

So the solution is: \[ x = 43 \]