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a fost răspuns

d×1000÷10-210×100=8900 afla numarul necunoscut

Răspuns :

Dx100:10-210x100=8900
Dx10-21000=8900
Dx10=8900+21000
Dx10=29900
D=29900:10
D=2990
Sper ca te am ajutat
Dx1000÷10-210x100=8900 Dx1000÷10-21000=8900 Dx100-21000=8900 Dx100=8900+21000 Dx100=29900 D=29900:100 D=299 Raspuns: 299