x = 9, y = 8
Объяснение:
5x + 7y = 101
7x - y = 55
y = 7x - 55
5x + 7 ( 7x - 55 ) = 101
54x - 385 = 101
54x = 486
x = 9
y = 9 * 7 - 55
y = 8
x = 9, y = 8
Объяснение:
5x + 7y = 101
7x - y = 55
y = 7x - 55
5x + 7 ( 7x - 55 ) = 101
54x - 385 = 101
54x = 486
x = 9
y = 9 * 7 - 55
y = 8