posted by jessica on .
Can someone show me step by step how to do this problem to have an example to go by so I will be able to do my other problems. Thanks
Solve by substitution
I know that you have solve one of the equations. I have picked the second one so it would be y= -1/3+1/3x right??
Then I substitute 4x-12(-1/3+1/3x)=5.
Now I have no clue what to do from there. Please help.
Couldn't find a variable to solve for.
This equation is invalid, the left and right sides are not equal, therefore there is no solution.If that right?
In the bottom, rearrange to read
Now put that value for x in the top equation...
then solve for y.
when you get y, go back and put it in
x= 3y+1 to get x.
I suggest you show your number as
Then 4x -12[(x-1)/3] = 5
Then 4x -4(x-1) = 5
etc. I'm sure you can handle it from here.