You can just multiply across because you dont have to worry about a common denominator since you're not adding or substracting the fractions. Then just simplify.
Equidistance means
Distance from R to P equals
Distance from Q to P.
So, in mathematical form,
PR = PQ
A1 means the first number
so a1 is (-4)
Answer:
-5 5/10, -32/40,5
whenever a number has a negative sign,the larger the number the smaller.
i.e (-55/10= -5.5) is smaller than -32/40=-0.8 and then the greatest is 5 since it is a positive number and positive numbers are greater than negative numbers.
Answer: 
<u>Add 3x to both sides</u>
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<u>Subtract 15 from both sides</u>
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<u>Divide both sides by 5</u>
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