Răspuns: [tex]\boxed{\boxed{\bf x =45}}[/tex]
Explicație pas cu pas:
Salutare!
[tex]\bf Notam ~cu~ x ~numarul ~cautat[/tex]
[tex]\bf (x \cdot 9:5+234):3=105[/tex]
[tex]\bf 9x :5+234=105\cdot 3[/tex]
[tex]\bf 9x :5+234=315[/tex]
[tex]\bf 9x :5=315 - 234[/tex]
[tex]\bf 9x :5=81~~~\bigg|\cdot5[/tex]
[tex]\bf 9x =81\cdot5~~~\bigg|:9[/tex]
[tex]\bf x =9\cdot5[/tex]
[tex]\boxed{\boxed{\bf x =45}}[/tex]
==pav38==
