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32 votes
32 votes
What is ; 3 3/4 - 2 1/5 thanks!

User StuartM
by
2.9k points

2 Answers

15 votes
15 votes

Answer:

1
(11)/(20)

Explanation:

3
(3)/(4) - 2
(1)/(5)

Multiply 3 and 4 to get 12.


(12+3)/(4) - (2x5+1)/(5)

Add 12 and 3 to get 15.


(15)/(4) - (2x5+1)/(5)

Multiply 2 and 5 to get 10.


(15)/(4) -
(10+1)/(5)

Add 10 and 1 to get 11.


(15)/(4) - (11)/(5)

The least common multiple of 4 and 5 is 20. Convert
(15)/(4) and
(11)/(5) to fractions with denominator 20.


(75)/(20) - (44)/(20)

Since
(75)/(20) and
(44)/(20) have the same denominator, subtract them by subtracting their numerators.


(75 - 44)/(20)

Subtract 44 from 75 to get 31.


(31)/(20)

Simplify


(31)/(2^(2) x 5 ) =
1(11)/(20)

Hope it helps and have a great day! =D

~sunshine~

User Lukas Mayer
by
3.4k points
14 votes
14 votes

Answer:1 11/20 (I think)

Step-by-step explanation: First subtracting 3 - 2 gets you 1. so we keep that aside and do fractions. first, what do 4 and 5 have in common? They both can be turned to 20. 3/4 can be multiplied to 20 4x5(20) so we do 3x5=15 now you have 15/20. Hope this makes sense. now we do 1/5 to ?/20 5x4=20 1x4=4 so 15/20-4/20=11/20 11/20+1= 1 11/20

-Sorry if its too complicated

(undo ur answer if u trusted me before bc I messed up)

(its good now)

User Marko Krstic
by
2.3k points
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