4x+7y-3z если 2x-y=505 и 3y-z=333. Created by guza2000. matematika-ru

4x+7y-3z если 2x-y=505 и 3y-z=333...

guza2000 @guza2000

August 2022 1 3 Report

4x+7y-3z если 2x-y=505 и 3y-z=333

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jekadva 2x-y=505 3y-z=333
y=2x-505 z=3y-333
   z=3(2x-505)-333
   z=6x-1515-333
   z=6x-1848
4x+7(2x-505)-3(6x-1848)=4x+14x-3535-18x+5544=18x-18x+5544-3535=2009

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