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29×56+a=6000, a+29×56=5142, 800:4+3000-3×2×(9000- 8979=

Răspuns :

1.624+a=6000    a=6000-1624=4376
a+1624=5142     a=5142-1624=3518
200+3000-6 x 21=200+3000+126=3326.Sper ca te-am ajutat si ca am inteles bine enuntul!