How do you subtract $2\frac { 1} { 2} - \frac { 4} { 5}$ ?

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Answer 1 · 2018-03-09T00:55:26

$1 7/10$

First, find the least common denominator between $2$ and $5 -> 10$

$2 1/2 - 4/5$

$= 2 5/10 - 8/10$

Then convert the $2$ into the fraction to make an improper fraction

$2 = 20/10$

So

$25/10 - 8/10$

$= 17/10 = 1 7/10$

Answer 2 · 2018-03-09T14:53:09

$1 7/10$

$2 1/2-4/5$

$:.=5/2-4/5$

$:.=(25-8)/10$

$:.=17/10$

$:.=1 7/10$

How do you subtract 2\frac { 1} { 2} - \frac { 4} { 5}2\frac { 1} { 2} - \frac { 4} { 5}?