Question

[4x+3y=24
26x+ 5y=
38

Answer 1

Ответ:

(-3/29; 236/29)

Пошаговое объяснение:

{4х + 3у = 24 | : 4

{26х + 5у = 38

{х + 0,75у = 6

{26х + 5у = 38

{х = 6 - 0,75у

{26х + 5у = 38

1)

26х + 5у = 38

26(6 - 0,75у) + 5у = 38

156 - 19,5у + 5у = 38

-19,5у + 5у = 38 - 156

-14,5у = -118

у = -118 : (-14,5)

у = 118 : 145/10

у = 118 * 10/145

у = 118 * 2/29

у = 236/29

2)

26х + 5у = 38

26х + 5 * 236/29 = 38

26х + 1180/29 = 38

26х = 38 - 1180/29

26х = -78/29

х = -78/29 : 26

х = -78/29 * 1/26

х = -3/29