Question

Cum se face : 1+{2x[3+(4+x):5]-6}x7=15..Va rog,urgent Multumesc

Answer 1

1+{2×[3+(4+x):5]-6}×7=15
{2×[3+(4+x):5]-6}×7=15-1
{2×[3+(4+x):5]-6}×7=14
{2×[3+(4+x):5]-6}=14:7
2×[3+(4+x):5]-6=2
2×[3+(4+x):5]=2+6
2×[3+(4+x):5]=8
[3+(4+x):5]=8:2
3+(4+x):5=4
(4+x):5=4-3
(4+x):5=1
(4+x)=1×5
4+x=5
x=5-4
x=1