31-7+9-x=20
X=?este cumva -13 sau 53

Răspunsul a fost dat de: USER6619
28 Agustus 2025 matematica 5 minute
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Întrebare

Clasă: Education Materie: matematica
31-7+9-x=20
X=?este cumva -13 sau 53
Întrebare a fost pusă de:
49 Vezi 49 Răspunsuri

Răspuns (49)

Cel mai bun răspuns
(51)
31-7+9-x=20
-x=20-31+7-9
-x=-13
x=13
Răspunsul a fost dat în data 28 Agustus 2025
(131)
Face ecuatia mai simpla: 
31 - 7+ 9=33
Deci :
33 - x = 20
de unde x = 33-20
x= 13
.. O seara placuta!
Răspunsul a fost dat în data 28 Agustus 2025

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