102.5 (x - 11.92) = 71.6 round your answer to 3 decimal places
13.868 is wrong answer.
Calculate like this:
102.5 ( x - 11.92 ) = 71.6
Divide both sides by 102.5
x - 11.92 = 71.6 / 102.5
Add 11.92 to both sides.
x = 71.6 / 102.5 + 11.92
x = 0.698536585 + 11.92
x = 12.618536585
x = 12.619
rounded to 3 decimal places