Răspuns :
Notam m =mere; p = prune
p=4×m
p - 4 = 7 ( m - 4)
4m - 4 = 7m - 28
4m - 7m = - 28 +4
- 3m = - 24 l : (- 3)
m = 8 → mere
4×8 = 32 → prune
Verific
8 - 4 = 4 mere raman
32 - 4 =28 prune raman
28 > 4 de 7 ori
Raspuns: 8 mere si 32 de prune
p=4×m
p - 4 = 7 ( m - 4)
4m - 4 = 7m - 28
4m - 7m = - 28 +4
- 3m = - 24 l : (- 3)
m = 8 → mere
4×8 = 32 → prune
Verific
8 - 4 = 4 mere raman
32 - 4 =28 prune raman
28 > 4 de 7 ori
Raspuns: 8 mere si 32 de prune
a - mere
b - prune
b=4*a
b-4=7( a-4)
4a-4=7a-28
4a-7a =- 28 +4
- 3a =- 24
a=-24:(-3)
a = 8
b= 4* a
b=4×8
b= 32
b - prune
b=4*a
b-4=7( a-4)
4a-4=7a-28
4a-7a =- 28 +4
- 3a =- 24
a=-24:(-3)
a = 8
b= 4* a
b=4×8
b= 32