Răspuns: [tex]\purple{~\bf e =30~}[/tex]
Explicație pas cu pas:
[tex]\bf (e - 5 \cdot 6 + 10\cdot5):5+4 \cdot8 =42[/tex]
[tex]\bf (e - 30 + 50):5+32 =42[/tex]
[tex]\bf (e - 30 + 50):5 =42-32[/tex]
[tex]\bf (e + 20):5 =10~~~~\bigg|\cdot5[/tex]
[tex]\bf (e +20)=50[/tex]
[tex]\bf e =50-20[/tex]
[tex]\red{\boxed{~\bf e =30~}}[/tex]
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