20,1x-1,1=4(10-5,25х)

Question

20,1x-1,1=4(10-5,25х)

Answer 1

20,1 х-1,1 = 40-21х
20,1х+21х=40+1,1
41,1х=41,1
х=1

Answer 2

20,1х-1,1=40-21х
20,1х+21х=40+1,1
41,1х=41,1
х=1