Question

I don't understand how to multiply divide and add and subtract fractions

Answer 1

To multiply fractions, you multiply across in both numerators and denominators.

`(a)/(b)* (c)/(d) = (a*c)/(b*d)`

To divide one fraction by another, it is the same as multiplying the first fraction by the reciprocal of the second fraction.

`( (a)/(b) )/( (c)/(d) ) = (a)/(b)* (d)/(c)`

To add and subtract fractions, first make the fractions have the same denominators. Then add or subtract the numerators. The denominators stay the same.

`(a)/(b)+ (c)/(b)= (a+c)/(b)`