Răspuns :
5 × a = 50
b + c = 25
=============
a × b + a × c = ?
Rezolvare :
5a = 50
a = 50 : 5
a = 10
10( b + c ) = 10 × 25 = 250 ( a × b + a × c )
Succes !!
b + c = 25
=============
a × b + a × c = ?
Rezolvare :
5a = 50
a = 50 : 5
a = 10
10( b + c ) = 10 × 25 = 250 ( a × b + a × c )
Succes !!