What to look for when solving simultaneous equations? (substitution method).
Hi there 
.
Are there any rules for spotting the correct equation to use when solving by the substitution method?
So if you have your two equations. Are there things I should look for that will show me which I should use to sub into the other equation?
Hope that makes sense.
.Are there any rules for spotting the correct equation to use when solving by the substitution method?
So if you have your two equations. Are there things I should look for that will show me which I should use to sub into the other equation?
Hope that makes sense.
Original post by makin
Hi there .
Are there any rules for spotting the correct equation to use when solving by the substitution method?
So if you have your two equations. Are there things I should look for that will show me which I should use to sub into the other equation?
Hope that makes sense.
.Are there any rules for spotting the correct equation to use when solving by the substitution method?
So if you have your two equations. Are there things I should look for that will show me which I should use to sub into the other equation?
Hope that makes sense.
If you're dealing with linear equations only then rearrange an equation to get either or . Doesn't really matter but I'd go for the easiest looking then substitute it in to the other.
If you have a quadratic and a linear, rearrange the linear equation to get or and substitute it into the quadratic.
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