Question

5x+y=4{x=3+2y решить систему уравнений​ Посмотреть ответы serovaksusa1 serovaksusa1 Ответ:Смотри решение на фото спасибо огромное gleban1707 gleban1707 Ответ:1, -1Объяснение:из первого выразим уу=4-5х, подставим во второех = 3 + 2(4-5х) = 3 + 8 - 10хх = 1после того как нашли х, подставим в любое уравнение х и посчитаем унапример подставим в 15+у = 4у = -1 спасибо большое за ответ

Answer 1

Solving the System of Equations

To solve the system of equations 5x + y = 4 and x = 3 + 2y, we can use the method of substitution or elimination. Let's use the substitution method in this case.

1. Start with the equation x = 3 + 2y. 2. Substitute this value of x into the other equation: 5(3 + 2y) + y = 4. 3. Simplify the equation: 15 + 10y + y = 4. 4. Combine like terms: 11y + 15 = 4. 5. Move the constant term to the other side: 11y = 4 - 15. 6. Simplify: 11y = -11. 7. Divide both sides by 11 to solve for y: y = -1.

Now that we have the value of y, we can substitute it back into one of the original equations to solve for x. Let's use the equation x = 3 + 2y.

1. Substitute y = -1 into the equation: x = 3 + 2(-1). 2. Simplify: x = 3 - 2. 3. Calculate: x = 1.

Therefore, the solution to the system of equations 5x + y = 4 and x = 3 + 2y is x = 1 and y = -1.

I hope this helps! Let me know if you have any further questions.