How do you solve #y=3x-9# and #2y-6x=-18# using substitution?
1 Answer
Jul 17, 2017
- First you regroup them (so that substitution is easier)
- Name the equations (again for easier substitution)
- Sub
#color(blue)1# in#color(red)2#
- Then solve
As you may have realised, those simultaenous equations are undefined. Try checking if you got any errors while copying this question.
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