121/2 divided by 90/4
121/2 ÷ 90/4
=
121
45
Step-by-Step Solution
-
1Take reciprocal of second fraction90/4 becomes 4/90
-
2Multiply by reciprocal121/2 × 4/90
-
3Multiply numerators & denominators121 × 4 = 484 2 × 90 = 180
-
4Simplify484/180 = 121/45
How to Divide Fractions
To divide fractions, use "Keep, Change, Flip": keep the first fraction unchanged, change the ÷ to ×, then flip the second fraction. Multiply and simplify.