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1 vote
Help me please reduce 5 15/30

User Ubermensch
by
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2 Answers

4 votes

Answer:

5 1/2

Explanation:

if I read this correctly, we have

5 15/30

and by "reduce" you mean "simplifying", right ?

we need to focus on 15/30.

how can this be simplified ?

well, we could see right away that 30 = 2×15.

so,

15/30 = 15/(2×15) = (1×15)/(2×15)

then we can divide the numerator and the denominator by 15 and end up with 1/2.

or if we don't see this, we try to find small common prime factors between both numbers.

let's start with 2.

2 is a factor of 30, but not of 15.

ok, then next one : 3

yes, 3 is a factor of 15 and of 30.

so, let's divide both by 3 :

15/30 = 5/10

again 3 ?

no, 3 is neither a factor of 5 nor of 10.

ok, next one : 5

yes, 5 is a factor of 5 and of 10.

so, let's divide both by 5 :

5/10 = 1/2

because one of them is now 1, we are finished.

so, the reduced or simplified answer :

5 15/30 = 5 1/2

if you need a full fraction, then 5 = 10/2. plus 1/2 is then

5 1/2 = 11/2

User Gdurelle
by
8.4k points
2 votes
0.5 it is for that question
User Kombucha
by
8.4k points

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