Question

{[(205 :5 +362 : 2) - 32 ×6 + a ]×221:13}-140:5=635 VA ROG MULT SA MA AJUTATI dau cel mai bun raspuns

Answer 1

{[(205 :5 +362 : 2) - 32 ×6 + a ]×221:13}-140:5=635 
{[41 +181) - 192 + a]×221:13}-28=635
 [222 - 192 + a]×221:13=635+28
(30+a)x221:13=663
(30+a)x221=663x13
(30+a)=8619:221
30+a=39
a=39-30
a=9