How do you solve #x= 3y-1# and #x+2y=9# using substitution?
You know the value of the variable
Remove the parentheses and solve.
Substitute y=2 into the first equation,
then use that equation in the second equation. This means that
Having said this, just replace the
After that, just check that the values make sense:
And for the second one:
Both answers satisfy both equations, which makes them correct.