Răspuns:
{[(107-63:x)*9-2]:5+3*9}*4-12=800
{[(107-63:x)*9-2]:5+27}*4-12=800
{[(107-63:x)*9-2]:5+27}*4=800+12=812
[(107-63:x)*9-2]:5+27=812:4=203
[(107-63:x)*9-2]:5=203-27=176
(107-63:x)*9-2=176x5=880
(107-63:x)*9=880+2=882
107-63:x=882:9=98
63:x=107-98=9
x=63:9
x=7
2. a35+
b5c
59d
a) daca numerele au cifre distincte, acestea pot fi doua
a= 1, b=4, c=7,d=2, 1472
a=4, b=1, c=7,d=2 4172
b) 1472+4172=5644
3. abc+
bca
cab
777
a=1, b=2, c=4
a=2, b=1, c=4
a=4, b=1, c=2
a=4, b=2, c=1
R:4 numere
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