Question

X+y =202 x - y = 40​

Answer 1

Методом сложения (у системы слева ставим плюс, и проводим черту внизу) получаем 2x=242
X=242/2=121
Y=202-x, y=202-121=81
Ответ: (121;81) или x=121 y=81

Answer 2

It looks like you've presented a system of linear equations with two variables, x and y:

Equation 1: $x + y = 202$ Equation 2: $x - y = 40$

To solve for the values of x and y, you can use various methods such as substitution, elimination, or matrix methods. Let's solve this system using the elimination method:

Adding Equation 1 and Equation 2:

$(x + y) + (x - y) = 202 + 40$ $2x = 242$ $x = 121$

Now that we have the value of x, we can substitute it into Equation 2 to solve for y:

$x - y = 40$ $121 - y = 40$ $y = 121 - 40$ $y = 81$

So, the solution to the system of equations is $x = 121$ and $y = 81$.