I suspect that this is going to be too fast-paced for beginners. They are going to need multiple examples and exercises for each of the concepts introduced.
This is sentence is kind of confusing. It seems like it's trying to say that if we know A = B, then we can substitute A for B (or vice versa) and get.... A = B?
It seems like it should say that if A = B, and A occurs in some equation, then we can substitute B in for A in that equation, and the resulting equation will hold.
I suspect that this is going to be too fast-paced for beginners. They are going to need multiple examples and exercises for each of the concepts introduced.
This is sentence is kind of confusing. It seems like it's trying to say that if we know A = B, then we can substitute A for B (or vice versa) and get.... A = B?
It seems like it should say that if A = B, and A occurs in some equation, then we can substitute B in for A in that equation, and the resulting equation will hold.