Question

3,2x +13y-5= 0,2)1-7,12 x + 3,9y-3,22=0,-2,88x - 3,9y - 6,78 = 0.3,8x - 1,8y-2=0;​

Answer 1

3 2+(13-5)=(13-5)=8+3==1 +2=13

Пошаговое объяснение:

я как то так понял.....

Answer 2

It looks like you have a system of four linear equations with two variables, x and y. Let's write down the system of equations:

1. 3.2x + 13y - 5 = 0.2
2. -7.12x + 3.9y - 3.22 = 0
3. -2.88x - 3.9y - 6.78 = 0
4. 3.8x - 1.8y - 2 = 0

We can solve this system of equations using various methods, such as substitution or elimination. I'll use the elimination method here.

First, let's multiply each equation by an appropriate factor to eliminate the decimal coefficients:

1. Multiply Equation (1) by 10 to get: 32x + 130y - 50 = 2
2. Multiply Equation (2) by 100 to get: -712x + 390y - 322 = 0
3. Multiply Equation (3) by 25 to get: -72x - 97.5y - 169.5 = 0
4. Multiply Equation (4) by 10 to get: 38x - 18y - 20 = 0

Now, we can use elimination to eliminate one of the variables. Let's eliminate x:

Adding Equation (1) and Equation (2):

(32x + 130y - 50) + (-712x + 390y - 322) = 2 + 0

Now, simplify and solve for y:

-680x + 520y - 372 = 2

-680x + 520y = 2 + 372

-680x + 520y = 374

Now, let's add Equation (3) and Equation (4):

(-72x - 97.5y - 169.5) + (38x - 18y - 20) = 0 + 0

Simplify and solve for y:

-34x - 115.5y - 189.5 = 0

-34x - 115.5y = 189.5

Now, we have a system of two equations with the same variable y:

1. -680x + 520y = 374
2. -34x - 115.5y = 189.5

We can solve this system of linear equations for x and y. You can use methods like substitution or elimination to find the values of x and y. If you need the exact values, you can use a calculator or a software tool for solving systems of linear equations.