754.219 - (342.411 - 298.657) - (902.902 - 519.986)=329.549
1) 342.411 - 298.657=43.754
2)902.902 - 519.986=382.916
3)754.219-43.754=710.465
4)710.465-382.916=327.549
1/2=0,5*100=50%
1/4=0,25*100=20%
1/5=0,2*100=20%
Х + у = 750
6х + 4 у = 3024
х = 750 - у
6 ( 750 - у) + 4у = 3024
4500 - 6у + 4 у = 3024
1476 = 2у
у = 738
х = 12
<span>738 легковых и 12 грузовиков</span>