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PisicaPewPew
a fost răspuns

( 8 × 5 + 6 × 9 + X ) : 9 + 312 = 323

Răspuns :

( 8 × 5 + 6 × 9 + X ) : 9 + 312 = 323 ⇔
⇔ (40+54+x):9+312=323 ⇔
⇔ (94+x):9+312= 323⇔
⇔ (94+x):9= 323-312 ⇔
⇔ (94+x):9=11 ⇔ 
⇔ 94+x= 11×9 ⇔
⇔94+x=99 ⇔
⇔x=99-94 ⇔
⇔x=5
ManuMrr
(8×5+6×9+X) :9+312=323
(40+54+X) :9+312=323
(94+x) :9+312=323

(94+x) :9=323-312
(94+x):9=11
94+x=11×9
94+x=99
x=99-94
x=5

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