Răspuns :
a)
n=8976-689
n=8287
4567-1818=6000-n
2749=600-n
n=6000-2749
n=3251
b)5001=3450+n
n=5001-3450
n=1551
2012+1918=n-3456
3930=n-3456
n=3930+3456
n=7386
c)
La primul nu pot sa vad tot ce scrie
n+819=10000
n=10000-819
n=9181
n=8976-689
n=8287
4567-1818=6000-n
2749=600-n
n=6000-2749
n=3251
b)5001=3450+n
n=5001-3450
n=1551
2012+1918=n-3456
3930=n-3456
n=3930+3456
n=7386
c)
La primul nu pot sa vad tot ce scrie
n+819=10000
n=10000-819
n=9181
a) 689+n=8976
n=8976-689
n= 8287.
4567-1818=6000-n
2749= 6000-n
n+2749=6000
n= 6000-2749
n= 3251
b) 5001=3450+n
-n+5001=3450
-n= 3450-5001
-n= -1551
n= 1551
2012+1918= n - 3456
3930= n-3456
-n+3930= 3456
-n= 3456-3930
-n= -7386
n = 7386
c) 999+n=5678+4067
999+n= 9745
n= 9745-999
n= 8746
n+819=10000+3452
n+819= 13452
n= 13452-819
n= 12633.