👤

[(624+123:3-a):6]ori3 +254=254

Răspuns :

[56:(a+20)+7]x5-30=15|+30
[56:(a+20)+7]x5=45|:5
56:(a+20)+7=9|-7
56:(a+20)=2|:2
a+20=28|-20
a=8