Пошаговое объяснение:
- 7.2x + 11y = - 19, 5.8x - 13y = 36
- 7.2x + 11y = - 19
- 7.2x = - 11y - 19 x = - 5/36 (-11y-19)
x = 55/36 * y + 95/36
5, 8(55/36 * y + 95/36) - 13y = 36
319/36y+551/ 36 - 13y = 36
- 149/36y+551/36-36
149/36 * y = 745/36
y = - 5
x = 55 / 36(- 5) + 95/36
x = 275 + 95/36
x = - 5
x = - 5 , y = - 5
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Answers & Comments
Пошаговое объяснение:
- 7.2x + 11y = - 19, 5.8x - 13y = 36
- 7.2x + 11y = - 19
- 7.2x = - 11y - 19 x = - 5/36 (-11y-19)
x = 55/36 * y + 95/36
5, 8(55/36 * y + 95/36) - 13y = 36
319/36y+551/ 36 - 13y = 36
- 149/36y+551/36-36
149/36 * y = 745/36
y = - 5
x = 55 / 36(- 5) + 95/36
x = 275 + 95/36
x = - 5
x = - 5 , y = - 5