14х+27х=656 81у-38у=645

Question

14х+27х=656
81у-38у=645

Answer 1

14х+27х = 656
41х = 656
х = 656/41
х = 16

81y-38y = 645
43y = 645
y = 645/43
y = 15

Comments

656

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как получили 16 и 15

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Так понятно?

Answer 2

14х+27х-656
41х=656
х-16.

81у-38у=645
43у=645
у=15