ma poate ajuta cnv? (doar g)

6+[15-(8:a*7+7)]*5=8:4+3*3
6+[15_(8:a*7+7)]*5=2+9
6+[15-(8:a*7+7)]*5=11
[15-(8:a*7+7)]*5=11-6
[15-(8:a*7+7)]*5=5
15-(8:a*7+7)=5:5
15-(8:a*7+7)=1
8:a*7+7=15-1
8:a*7=14-7
8:a=7:7
8:a=1
a=8