If x+y=580 and x=3y then what are x and y?

x = 435

y = 145

Step-by-step explanation:

The key to this problem is that x = 3y. So put that into

x + y = 580                     Substitute 3y for x

3y + y = 580                   Combine like terms

4y = 580                         Divide by 4

4y / 4 = 580 / 4              Do the division

y = 145

x + y = 580                     Substitute the value for y

x + 145 = 580                 Subtract  145 from both sides

x = 580 - 145                  Combine

x = 435

x = 25

step-by-step explanation:

a^2+b^2=c^2

7^2+24^2=c^2

49+576=625

sqrt625=25

x=25