How do you use multiplying by 1 to find an expression equivalent to #7/6# with a denominator of 6d?
The answer to this question is a lot easier than it looks at first glance!
As a fraction, when the numerator and the denominator are the same, the fraction is equivalent to 1.
To make any equivalent fraction multiplying by 1 does not change the value of the fraction, but changes what it looks like.
Just multiply the top and bottom by the same number!
In this case we have to find a fraction equivalent to