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Care este a,b,c stiind ca: a×b=1600 b+c=40 a×c = 400.

Răspuns :

[tex]b = 40 - c\\\\ a = 400:c\\\\ \\ (40 - c) * \frac{400}{c} = 1600\\\\ 40 * 400 - 400c = 1600c\\\\ 16000 = 2000c\\\\ c = 8\\\\ a = 400:8\\\\ \bold{a = 50}\\\\ b = 40 - c\\\\ b = 40 - 8 \\\\ \bold{b= 32} [/tex]