Răspuns:
6+[15-(8:a x 7+7)] x 5 = 8:(1 x 4)+3 x 3
6+[15-(8:a x 7+7)] x 5 = 8:4+9
6+[15-(8:a x7+7)] x 5 = 2+9
6+[15-(8:a x 7+7)] x 5 = 11
[15-(8:a x 7+7)] x 5 = 11-6
[15-(8:a x 7+7)] x 5 = 5
[15-(8:a x 7+7)] = 5:5
15-(8:a x 7+7) = 1
(8:a x 7+7) = 15-1
8:a x 7+7 = 14
8:a x 7 = 14-7
8:a x 7 =7
8:a =7:7
8:a =1 => a = 8 ------R,a = 8-------
----Spor la teme------
Explicație pas cu pas:
Succes!
Coroana?