Andreiandy0928ask
a fost răspuns

28+72: b+12=48 ma puteti ajuta​

Răspuns :

Crintina72ask

Salutare!

28+72:b+12=48

28+72:b=48-12

28+72:b=36

72:b=36-28

72:b=8

b=72:8

b=9

Carmendiacuask

Răspuns:

72:b=a

28+a=48-12

28+a=36

a=36-28

a=8=>a=72:b=>

72:b=8

b=72:8

b=9