Вопрос:
527. Solve the system of equations: { 3x - 2y = 5, 2x + 5y = 16.
Смотреть решения всех заданий с листаОтвет:
Решение:
- Умножим первое уравнение на 5, второе на 2:
15x - 10y = 25, 4x + 10y = 32. - Сложим новые уравнения:
(15x - 10y) + (4x + 10y) = 25 + 32. - Приведем подобные слагаемые:
19x = 57. - Найдем
x: x = 3. - Подставим
x = 3 во второе уравнение: 2(3) + 5y = 16. 6 + 5y = 16.5y = 10.y = 2.
Ответ: x = 3, y = 2
ГДЗ по фото 📸Похожие
- 518. Solve the system of equations: { 3x - y = 8
- 519. Solve the system of equations: { x - y = 3, 3x + 4y = 2.
- 520. Solve the system of equations: { 2x + 3y = -7, x - y = 4.
- 521. Solve the system of equations: { x - 3y = 8, 2x - y = 6.
- 522. Solve the system of equations: { x - 4y = -1, 3x - y = 8.
- 523. Solve the system of equations: { 6x + y = 5, 2x - 3y = -5.
- 524. Solve the system of equations: { x - 6y = -2, 2x + 3y = 11.
- 525. Solve the system of equations: { 2x + 3y = 3, 5x + 6y = 9.
- 526. Solve the system of equations: { 3x + 2y = 8, 2x + 6y = 10.
- 528. Solve the system of equations: { 2x - 3y = 5, 3x + 2y = 14.
- 529. Solve the system of equations: { 4x - 6y = 26, 5x + 3y = 1.
- 530. Solve the system of equations: { 8x + 3y = -21, 4x + 5y = -7.
- 531. Solve the system of equations: { 8x + 2y = 11, 6x - 4y = 11.
- 532. Solve the system of equations: { 7x + 3y = 1, 2x - 6y = -10.
- 533. Solve the system of equations: { 3x - 2y = 5, 5x + 4y = 1.
- 534. Solve the system of equations: { 2x + 3y = 1, 6x - 2y = 14.