Question

□4x+3y=7,□□3x-5y=27;​

Answer 1

4х-3у=7  

4х=3у+7  

х=(3у+7)/4

3*x-5*y = 27

-5*y + 3*x = 27

x = 27 / ((-5*y + 3*x)/x)

x = 9 + 5*y/3

Answer 2

It seems like you have a system of linear equations with missing coefficients or variables denoted by blank squares (□). To solve this system of equations, we need to determine the missing values in the coefficients or variables.

Let's start by solving the system of equations as it is:

1. 4x + 3y = 7
2. □□3x - 5y = 27

To find the values of □□, we can use the first equation (1) to solve for x in terms of y:

4x = 7 - 3y x = (7 - 3y)/4

Now, we can substitute this expression for x into the second equation (2):

□□3[(7 - 3y)/4] - 5y = 27

Let's simplify this equation:

□□(21 - 9y)/4 - 5y = 27

To eliminate the fractions, we can multiply both sides of the equation by 4:

□□(21 - 9y) - 20y = 108

Now, distribute □□ on the left side:

21□□ - 9□□y - 20y = 108

Now, let's find the value of □□ that will make this equation true. We'll do this by isolating □□ terms on one side and constants on the other side:

21□□ = 108 + 9□□y + 20y

21□□ - 9□□y = 108 + 20y

Factor out □□ on the left side:

□□(21 - 9y) = 108 + 20y

Now, divide both sides by (21 - 9y) to isolate □□:

□□ = (108 + 20y)/(21 - 9y)

So, the value of □□ depends on the value of y. You can substitute this expression for □□ into the equation to solve for specific values of x and y. If you have a specific value of y or if you want to find a particular solution, please provide more information or a specific value for y.