Question 430182
"5 times of a mystery number is 1980 more than 5/12
 of the same mystery number. Find the mystery number?"


x = mystery number


5x = (5/12)x + 1980 {5 times the number is 1980 more than 5/12 the number}
60x = 5x + 23,760 {multiplied entire equation by 12, to clear fraction}
55x = 23,760 {subtracted 5x from both sides}
x = 432 {divided both sides by 55}


432 is the mystery number
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