Question

У=x+5 3x+y=25 substitution

Answer 1

(5,10)

Explanation:

So we have the system of equations:

`y=x+5\\3x+y=25`

To solve, we can use substitution.

Substitute the first equation into the second:

`3x+y=25\\3x+(x+5)=25`

Combine like terms:

`4x+5=25`

Subtract 5:

`4x=20`

Divide by 4:

`x=5`

Now, substitute this into the first equation:

`y=x+5\\y=5+5`

Add:

`y=10`

So, our answer is (5,10)

And we are done :)