sa rezolve cineva asta va rog

Răspuns:
(5/9×9/25+8/10) / (6/9×24+4) = (4/10×0,5)/x
(1/5+8/10) / (2/3×24+4) = (2/10)/x
(10/10) / (16+4) = 0,2/x
1/20=0,2/x
x=20×0,2
x=4