Răspuns :
Salutare!
[tex]\bf 4+a+20=78[/tex]
[tex]\bf a+24=78[/tex]
[tex]\bf a=78 -24[/tex]
[tex]\boxed{\bf a=54}[/tex]
Raspuns: a = 54
Salutare!
[tex]\bf 4+a+20=78[/tex]
[tex]\bf a+24=78[/tex]
[tex]\bf a=78 -24[/tex]
[tex]\boxed{\bf a=54}[/tex]
Raspuns: a = 54