Question

Va rog rezolvati problema si aratati toti pasii.

Dau coroana pentru cel mai bun raspuns.

Calculati a+a:a, stiind ca: 2015-20:{[10-4*4:(a-3*5)]+2}=2010

Va multumesc

Answer 1

2015-20:{[10-4*4:(a-3*5)]+2}=2010
2015-20:{[10-16:(a-15)]+2}=2010
20:{[10-16:(a-15)]+2}=2015-2010
20:{[10-16:(a-15)]+2}=5
{[10-16:(a-15)]+2}=20:5
[10-16:(a-15)]+2=4
[10-16:(a-15)]=4-2
10-16:(a-15)=2
16:(a-15)=10-2
16:(a-15)=8
a-15=16:8
a-15=2
a=2+15
a=17

a+a:a=17+17:17=17+1=18