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Ответ:
Пошаговое объяснение:
y-2x=4
7x-y=1
сложим оба уравнения
y-2x+7x-y=4+1
5x=5
x=5:5=1
х=1
подставим х=1 в первое уравнение
у-2=4
у-2+4=6
x=1 ; y=6
Проверка
6-2=4
7-6=1
Ответ дал:
0
To solve the given system of equations, we can use the method of substitution or elimination. I will use the substitution method to solve for the values of x and y.
First, let's solve the first equation for y:
y = 2x + 4
Now, substitute this value of y into the second equation:
7x - (2x + 4) = 1
7x - 2x - 4 = 1
5x - 4 = 1
5x = 5
x = 1
Now that we have found the value of x, we can substitute it back into the first equation to solve for y:
y = 2(1) + 4
y = 2 + 4
y = 6
So the solution to the system of equations is:
x = 1
y = 6
First, let's solve the first equation for y:
y = 2x + 4
Now, substitute this value of y into the second equation:
7x - (2x + 4) = 1
7x - 2x - 4 = 1
5x - 4 = 1
5x = 5
x = 1
Now that we have found the value of x, we can substitute it back into the first equation to solve for y:
y = 2(1) + 4
y = 2 + 4
y = 6
So the solution to the system of equations is:
x = 1
y = 6
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