Question

2) | 5x - 2 = 6,7х + 2y = 6;4)| x+ Зу = 17,2y - х = 13.​

Answer 1

Ответ:

2)х=1 4)у=6

у=1. х=-1

Объяснение:

может так

Answer 2

It looks like you've provided two sets of equations. Let's solve each set:

1. 5x - 2 = 6 7x + 2y = 6

First, solve the first equation for x:

5x - 2 = 6 5x = 6 + 2 5x = 8 x = 8/5

Now, substitute the value of x into the second equation:

7x + 2y = 6 7(8/5) + 2y = 6 (56/5) + 2y = 6

Now, subtract (56/5) from both sides to isolate 2y:

2y = 6 - (56/5) 2y = (30/5) - (56/5) 2y = (-26/5)

Now, divide by 2 to solve for y:

y = (-26/5) / 2 y = (-26/5) * (1/2) y = -13/5

So, the solution to the first set of equations is:

x = 8/5 y = -13/5

2. x + 3y = 17 2y - x = 13

Add the two equations together to eliminate x:

(x + 3y) + (2y - x) = 17 + 13

x and -x will cancel each other out:

5y = 30

Now, solve for y:

y = 30 / 5 y = 6

Now that you know the value of y, substitute it back into one of the original equations to find x. Let's use the first equation:

x + 3y = 17 x + 3(6) = 17 x + 18 = 17

Subtract 18 from both sides:

x = 17 - 18 x = -1

So, the solution to the second set of equations is:

x = -1 y = 6