42 х=82*31. Х (4275-3209)=11845. 7200:9-а=209

Question

42 х=82*31. Х (4275-3209)=11845. 7200:9-а=209

Answer 1

42х=82*31
42х=2542
Х=60,5



Х(4275-3209)=11845
4275х-3209х=11845
1066х=11845
Х=~11.1


7200:9-а=209
800-а=209
-а=209-800
-а=-591 |: (-1)
а=591