Multiply both sides with 3 to obtain:
That is what you want right?
Dividing by is multiplying by
Try dividing 12 into 3 equal parts,
Now try dividing 12 into parts...
What is 12 divided by ?
Expressing the numerator as a multiple of the denominator allows cancellation
of non-zero common factors (after all, a third is 0.67ish).
Any number divided by itself is 1, except zero.
A fraction divided by itself is 1
So, 12 divided by a third is 36, because it's really 12 times 3.
Dividing by a fraction is multiplying by the fraction turned upside down.
of course, this means... multiply by the numerator and divide by the denominator.
The vectors question you had a few days ago......
The critical thing to understand there was
The vector starts at the point x and ends at y.
The vectors and both start at the origin.
You understand this by examining the parallelograms.