An equal number of girls and boys attended the magic show. When 21 girls and 73 boys left, there were 5 times as many girls as boys. How many boys attended the magic show at first?
number of boys --- x
number of girls --- x
after the leaving:
boys ---- x-73
girls ----- x - 21
girls = 5 times boys
x-21 = 5(x-73)
x - 21 = 5x - 365
344 = 4x
x = 86
state your conclusion.