72-x=91:7

To solve the equation \( 72 - x = \frac{91}{7} \), first simplify the right side:

\[ \frac{91}{7} = 13 \]

Now the equation becomes:

\[ 72 - x = 13 \]

Next, isolate \( x \) by subtracting 72 from both sides:

\[ -x = 13 - 72 \]

This simplifies to:

\[ -x = -59 \]

Now, multiply both sides by -1 to solve for \( x \):

\[ x = 59 \]

So, the solution is:

\[ x = 59 \]