👤
a fost răspuns

[18+(a-2016):3]×3-15=2019

Răspuns :

[18+(a-2016):3]×3=2019+15.
[18+(a-2016):3]×3=2034
[18+(a-2016):3]=2034:3
[18+(a-2016):3]=678
(a-2016):3=678-18
(a-2016):3=660
a-2016=660:3
a-2016=220
a=220+2016
a=2236