Question 51052
Let the man's weight = x lbs.
{{{(5/6)x + 30 = x}}} Simplify and solve for x. Multiply everything by 6.
{{{5x + 180 = 6x}}} Subtract 5x from both sides.
{{{x = 180}}}lbs.

Check: Set x = 180

{{{(5/6)(180)+30 = 180}}} Simplify.
{{{150+30 = 180}}}
{{{180 = 180}}}