2х+22.6=54.2
2х=21.6
68,37-у=50,43
-у=50,43-68,37
-у=-17,94
y=17.94
3x-8.7=6.9
3x=15.6
x=5.2
x+5.7=2*5.1
x+5.7=10.2
x=4.5
(395х72-603)х16-960:24=445352
1)
395х72=28440
2)
28440-603=27837
3)
27837х16=445392
4)
960:24=40
5)
445392-40=445352
395х72-603х16-960:24=18752
1)
395х72=28440
2)
603х16=9648
3)
960:24=40
4)
28440-9648=18792
<span>5)
18792-40=18752
</span>