Add 75/90 and 4/81
75/90 + 4/81 is 143/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 90 × 9 = 810,
75/90 = 75 × 9/90 × 9 = 675/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
4/81 = 4 × 10/81 × 10 = 40/810 - Add the two like fractions:
675/810 + 40/810 = 675 + 40/810 = 715/810 - 715/810 simplified gives 143/162
- So, 75/90 + 4/81 = 143/162
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