x-280+213+319-109=1000

Răspuns :

x-280+213+319=1000+109
x-280+213=1109-319
x-280=790-213
x=577+280
x=857
Sper ca te-am ajutat!

X-280+213+319-109=1000

X-280+213+319=1000+109

X-280+213+319=1109

X-280+213=1109-319

X-280+213=790

X-280=790-213

X-280=577

X=577+280

X=857

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