Posted by Sammy on .
so would the new eqaution be...
2x+8=10
then..
2x=2
x=1?
We know that y = x + 8.
So if x + y = 10, then x + x + 8 = 10.
but what about the y?ANd what do I do afetr that?
If you know what x equals, then you can calculate what y equals.
Once you've solved for x and y, you are done.
I need help bcause I don't understand and tommorrow I have test.
Use the Substitution method to solve the system of equations.
x + y = 10
y = x + 8
y=9
that's it?
yes, x=1
now put x=1 into either of the original equations, and solve for y.
x + y=10
1+y=10 solve for y.
Yes
thanx!can you help me with this one:
3x + y = 5
4x  7y = 10
solve for y in the first equation...that is in terms of x. Then put this expression into the second equation..
4x7(expresson for y here)=10
then solve for x.
Put only one problem per thread please. Start a new thread if you have a new problem, it makes life simpler.
we get our report cards in less than 2 weeks and if im steel making a 66.4 i cant play bball
3x4y=21 4x+2y=6 liniar combinations
3x4y=21
4x+2y=6
how do i solve problems like that?
i need help know on 12q+4=8q6

Algebra1!Plz help I have test 2morrow!!! 
Michael,
(Multiple Choice Worth 1 points)
Find the product of (4x + 3y)(4x − 3y).
16x2 − 24xy + 9y2
16x2 − 9y2
16x2 + 24xy + 9y2
16x2 + 9y2 
Algebra1!Plz help I have test 2morrow!!! 
nana,
[6.02] Use the Substitution Method to solve the following system of equations.
2x + y = 3
3x + 4y = 1
(1, 1)
(1, 1)
(1, 1)
(1, 1)