An instrument for detecting and measuring small electric currents
Dividing fractions is the same as multiplying by its reciprocal so you can change the equation to this

And you can simplify by eliminating the fours and multiplying straight across

You can pull out - 7 from the top and 2 from the bottom so you have this

And then you can cancel out to (2-x) to get an answer of
This question is obviosly missing an ending but, I bet you will have to divide.
Answer:
D
Step-by-step explanation:
Okay so there are 52 weeks in a year and she runs 12 miles every week so multiply 52 times 12 which equals 624