Answered

At Westonci.ca, we provide clear, reliable answers to all your questions. Join our vibrant community and get the solutions you need. Experience the ease of finding accurate answers to your questions from a knowledgeable community of professionals. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

6x+3y=13
3x-y=4
what is the value of y

Sagot :

Nekoneko
There are two ways to solve this.... Elimination or substitutionSubstitution6x+3y=133x-y=4
First we free one value...
-y=4-3x
y=-4+3x

now we use this solve for x
6x+3(-4+3x)=136x-12+9x=13
15x= 13+12
x= 25/15

Now that we have x we find y
y= -4+3(25/15)y=1
Now we check
6(25/15)+3(1)=1310+3= 13
13=13
3x-y=4
3(25/15)-1=4
5-1=4 
4=4

yeah... so x= 25/15 and y= 1

now elimination (Yay... *note of sarcasm*)
6x+3y=133x-y=4 
we need to sum and both equation in a way to eliminate one variable... so we multiply 3 to eliminate y so...
6x+3y=133x-y=4 (*3)
6x+3y=139x-3y=12

now we resolve
15x= 25
x= 15/25

now we could use x in any equation to find y
6(25/15)+3y=1310+3y=13
3y=13-10
y=3/3
y=1

3x-y=4
3(25/15) -y= 4
5-y= 4
-y=4-5
-y=-1
y=1

So now we check if it is correct
6(25/15)+3(1)=1310+3= 13
13=13
3x-y=4

3(25/15)-1=4
5-1=4 
4=4
So yeah... we can now tell that x= 25/15 and y = 1
your answer is y= 1...
Hope it helped...
We appreciate your time on our site. Don't hesitate to return whenever you have more questions or need further clarification. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.