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Afla numerele necunoscute: 23.600+x=50.000+300; x+3.809-1.070=8.500; 2.038+5.655-x=2.836; 1.685+6.856=x+3.20+2.61.

Răspuns :

23.600+x= 50.000+300 x= 50.000+300 - 23.600 x= 50.300 - 23.600 x= 26.700 x+3.809 - 1.070= 8.500 x+2.739= 8.500 x= 8.500 - 2.739 x= 2.761 2.038+5.655-x= 2.836 7.693-x= 2.836 x= 7.693+ 2.836 x= 10.475 1.685+6.856=x +3.20+2.61 8.541=x + 581 x=8.541-581 x= 7.960