Помогите14x+27x=656 и81y-38y=645

Question

Помогите
14x+27x=656 и
81y-38y=645

Answer 1

14x+27x=656
41х = 656
х = 656 : 41
х = 16
14 * 16 + 27 * 16 = 224 + 432 = 656

81y-38y=645
43у = 645
у = 645 : 43
у = 15
81 * 15 - 38 * 15 = 1215 - 570 = 645

Answer 2

14х+27х=656;
41х=656;
х=16

81у-38у=645;
43у=645;
у=15