How do you solve:?
7y=x+2
4x-8y=12
Thank you!
How do you solve:?
7y=x+2
4x-8y=12
Thank you!
The way I like to do substitution is by learning the "y" variable first. This means one of the equations must be set to "y=". The second question looks like it will have nicer numbers after isolating "y".
Move y to one side ---> -8y=-4x + 12
Isolate y by dividing -8 from both sides --> y=(1/2)x - 12
Now, you can replace the y in the first equation, 7y=x+2 with (1/2)x - 12 and solve for x. From there, you can then finally solve for y by using the number you got for x by substitution.