Question

3х - у=72x+3y=- 10.​

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

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

1. $3x - y = 72$
2. $x + 3y = -10$

To solve for $x$ and $y$, you can use various methods such as substitution, elimination, or matrix methods. I'll show you how to solve it using the substitution method:

From equation (2), solve for $x$: $x = -10 - 3y$

Substitute this value of $x$ into equation (1): $3x - y = 72$ $3(-10 - 3y) - y = 72$

Simplify the equation: $-30 - 9y - y = 72$ $-10y - 30 = 72$

Add 30 to both sides: $-10y = 102$

Divide by -10: $y = -10.2$

Now that you have the value of $y$, substitute it back into the equation for $x$: $x = -10 - 3y = -10 - 3(-10.2) = 21.6$

So, the solution to the system of equations is approximately $x = 21.6$ and $y = -10.2$.