Question

3 1/2 - 2 2/5=

Answer 1

1.1

Answer 2

@AustinC you should know better than to use decimal approximations.

We are given,

\(\displaystyle 3\frac{1}{2}-2\frac{2}{5}\)

We need to get them into proper fractions,

\(\displaystyle \frac{7}{2}-\frac{12}{5}\)

Now, to be able to do this subtraction we need a common denominator. Do you know what it would be?

Answer 3

Yes, the common denominator is 10.

Answer 4

Correctomundo, that means that we would have this,

\(\displaystyle \frac{35}{10}-\frac{24}{10}=~?\)

Answer 5

@austinL sorry that a 15 year old was trying to help. thanks for feedback i will use your advice in the future.

Answer 6

We started with,

\(\displaystyle 3\frac{1}{2}\)

To put in in proper fraction form, you multiply the 3&2 and then add 1 to get 7. So therefore,

\(\displaystyle \frac{7}{2}\)

Then to get the common denominator of 10 we multiply it by \(\displaystyle \frac{5}{5}\)

\(\displaystyle \frac{7}{2}\times\frac{5}{5}=\frac{35}{10}\)

Same process with the other side, but you multiply it by \(\displaystyle\frac{2}{2}\)

Answer 7

Now, when we have a subtraction of fractions we have this,

\(\displaystyle \frac{a}{b}-\frac{c}{b}=\frac{a-c}{b}\)

Which when translated to our problem,

\(\displaystyle \frac{35}{10}-\frac{24}{10}=\frac{35-24}{10}=~?\)

Answer 8

Ok. Thanks! (: @austinL & @AustinC

Answer 9

No problemo!