7*(х:23)=560 с:16+1273=1897 (180:у)*40=2400 26000-а=502*28

Question

7*(х:23)=560
с:16+1273=1897
(180:у)*40=2400
26000-а=502*28

Answer 1

1) 560:7=80
Х=80*23=1840
2)1897-1273=624
Х=624*16=9984
3)2400:40=60
Х=180:60=3
4)502*28=14056
Х=26000-1456=11944