Question

Subtracting Fractions:

12-3/4=

Answer 1

So for this one, you WILL have to make 12 an improper fraction

Answer 2

12 over 1

Answer 3

No that's still a fraction. I guess you don't HAVE to, but... okay, what's 1- 3/4? Or, 100-75? etc

Answer 4

Oh I guess you could do that. Then make them like denominators

Answer 5

Find the LCM between 1 and 4. What is that?

Answer 6

4

Answer 7

Ok, so multiply the numerator and denominator \(\dfrac{12}{1}\) by 4.

Answer 8

What do you get (as a fraction)?

Answer 9

and the second number is 3/4?

Answer 10

Yeah, but what do you get for the first one?

Answer 11

\[\frac{ 12 }{ 1 }-\frac{ 3}{ 4 }\]

Answer 12

LCM

Answer 13

\[\frac{12}{1} \cdot \frac{4}{4}\]

Answer 14

\[\frac{ 12*4-3*1 }{ 1*4 }\]

Answer 15

It is 4 so then..

Answer 16

Once you get that answer, combine the two fractions as @Nurali did, and simplify.

Answer 17

\[\frac{ 48-3 }{ 4 }\]

Answer 18

\[\frac{ 45 }{ 4 }\]

Answer 19

So \(12 \cdot 4\) = 48.

You have 3 ontop the other fraction.

Subtract the numerators, 48- 3

Answer 20

put it over 4.

Answer 21

Ok so wait.. i got confused now..