Question

afla nr necunoscute din urmatoarele relatii egalitate{(4m-72):4+20}-64=20
Dau coroana celui care scrie in 3 minute si 100 puncte

Answer 1

{(4m-72):4+20}-64=20
{(4m-72):4+20}=64+20
(4m-72):4+20=84
(4m-72):4=84-20
(4m-72):4=64
4m-72=64×4
4m-72=256
4m=256+72
4m=328
m=328:4
m=82