Let n represent the number. -13×(n -60) = n +(-59) -13n +780 = n -59 839 = 14n 839/14 = n = 59 13/14
The number is 59 13/14.
_____ Check The difference between the number and 60 is 59 13/14 -60 = -1/14 -13 times that value is -13*(-1/14) = 13/14 Compare that to the number plus -59 59 13/14 -59 = 13/14 . . . . . the same value, as required.
