Question

X+21=y y-6=5x (x+21)-6=5x

Answer 1

Пошаговое объяснение:

х+21=y. y-6=5x (x+21)-6=5x

x=y-21. y=5x+6. x+15=5x

-4x=-15

x=3,75

Answer 2

Let's solve the equations step by step.

Given:

1. x + 21 = y
2. y - 6 = 5x

To begin, we'll substitute the value of y from the first equation into the second equation.

Substituting y = x + 21 into equation 2:

(x + 21) - 6 = 5x

Simplifying the equation:

x + 21 - 6 = 5x x + 15 = 5x

Next, let's isolate the x term on one side of the equation. Subtracting x from both sides:

15 = 5x - x 15 = 4x

To solve for x, we'll divide both sides of the equation by 4:

15/4 = x

Simplifying the right side:

x = 3.75

Now that we have the value of x, we can substitute it back into the first equation to find y:

y = x + 21 y = 3.75 + 21 y = 24.75

So the solution to the system of equations is x = 3.75 and y = 24.75.