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Calculati:113+(133×8)=2000-y+y:y
(h:5-5)×9+186:6=500:10
8+6×[4+27:(0+u×9)]=49+10:10
(s+s×s):8=s
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Răspuns :

Cocirmariadenis
113+(133×8)=2000-y+y:y 
113 + 1064 =2000 - y +1
2000 - y +1= 1177
2000-y=1177-1
y=2000 - 1176
y = 824

(h:5-5)×9+186:6=400:10
(h:5-5)×9 +31=40
(h:5-5)×9=40-31
h:5-5=  9:9
h:5-5=1
h:5=1+5
h:5=6
h=6x5
h=30


8+6×[4+27:(0+u×9)]=49+10:10
8+6×[4+27:(0+u×9)]=50
6×[4+27:(0+u×9)]=50-8
6×[4+27:(0+u×9)]=42
4+27:(0+u×9)=42:6
4+27:(0+u×9)=7
27:(0+u×9)=7-4
27:(0+u×9) =3
0+u×9=27:3
u×9=9
u=9:9
u=1

(s+s×s):8=s
s+s²=8s
s²-s-8s=0
s²-7s=0
s(s-7)=0⇒s=0 sau (s-7=0⇒s=7)

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