Question

У=20х-15 и у=5х+30 СРОООООЧЧНОООООООООО!!!!!!

Answer 1

y=20x-15 y=5x+30

-20x=-15 5x= 30

20x=15 x=30/5

x=15/20 x=6

x=0,75 y= 5*6+30=60

y=20*0,75-15=0

Answer 2

To find the values of x and y that satisfy both equations simultaneously, we need to solve the system of equations. Given the equations:

1. y = 20x - 15
2. y = 5x + 30

Since both equations are set equal to y, we can set them equal to each other:

20x - 15 = 5x + 30

Now, let's solve for x:

20x - 5x = 30 + 15 15x = 45 x = 45 / 15 x = 3

Now that we have the value of x, we can find the value of y by substituting x into one of the original equations. Let's use equation 1:

y = 20 * 3 - 15 y = 60 - 15 y = 45

So, the solution to the system of equations is x = 3 and y = 45.