Question

1) x+y= 2;4) 7x - 2y = 10;​

Answer 1

Ответ:

Пошаговое объяснение:

Це  система. Де умова до завдання

Answer 2

To solve the system of equations:

1. x + y = 2
2. 7x - 2y = 10

We can use the method of substitution or elimination. Let's use the substitution method.

From equation 1, we can express x in terms of y as follows:

x = 2 - y

Now substitute this value of x into equation 4):

7(2 - y) - 2y = 10

Simplify the equation:

14 - 7y - 2y = 10

Combine like terms:

-9y + 14 = 10

Move the constant term to the right side:

-9y = 10 - 14

-9y = -4

Divide both sides by -9:

y = -4 / -9

Simplify:

y = 4/9

Now substitute this value of y back into equation 1) to find x:

x + 4/9 = 2

Subtract 4/9 from both sides:

x = 2 - 4/9

To get a common denominator, we multiply 2 by 9/9:

x = 18/9 - 4/9

Simplify:

x = 14/9

So the solution to the system of equations is x = 14/9 and y = 4/9.