Question 59323
what is 
L1) 2x-3y=12
L2)    x=4y+1

substituion form
:
Substitute the right side of L2 into L1 for x and solve for y
2(4y+1)-3y=12
8y+2-3y=12
5y+2=12
5y+2-2=12-2
5y=10
5y/5=10/5
y=2
:
Substitute 2 in for y in L2 and solve for x
x=4(2)+1
x=8+1
x=9
The solution (x,y)=(9,2)  
This is the point that both equations share. Garphically, its' the point of intersection of the two lines.
Happy Calculating!!!