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10x{470:10+3x(475-399)}

Răspuns :

10×{470:10+3×(475-399)}
= 10×(47+3× 76)
=10× (47+ 228)
=10× 275
=2750

Sper ca te-am ajutat.. coronita?
10×{470:10+3×76}=
10×{470:10+228}=
10×{47+228}=
10×275=
2750