[(□-416:4+2)×5+3]×2=1986 [(□-1):100+90]:10-10=0 □:2+(123×3-53×4)=257 [(□:3-1):6+489]:25+2=26 Rezolvati desfasurat va rog!
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[(a-104+2)x5+3]=1986:2 [(a-104+2)x5+3]=993
[(a-104+2)x5]=993-3 [(a-104+2)x5]=990
(a-104+2)=990:5 a-102=198 a= 198+102=300 a=300
[(b-1):100+90]:10-10=0 [(b-1):100+90]:10=10
[(b-1):100+90]=10x10=100 [(b-1):100}=100-90=10
b-1=10x100 b-1=1000 b= 999
c:2+(123×3-53×4)=257 c:2= 257- (369-212)
c:2 = 257 -157=100 c:2=100 c=200
[(d:3-1):6+489]:25+2=26 [(d:3-1):6+489]:25= 26-2=24
[(d:3-1):6+489]= 24x25 =600 (d:3-1):6= 600-489= 111
(d:3-1):6=111 (d:3-1)= 6x111 =666
d:3=667 d=667x3=2001 d=2001
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