Question

(5 x 5 + 6 x 6-r) + 6 x 5-5x 10 = 9:3

Dau coroana!! ​

Answer 1

Răspuns:

( 25+36-r ) +30-50=3

61-r+30-50=3

61-r+30=3+50

61-r+30=53

61-r=53-30

61-r=23

r=61-23

r=38