Add 1/90 and 21/56
1/90 + 21/56 is 139/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
1/90 = 1 × 28/90 × 28 = 28/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
21/56 = 21 × 45/56 × 45 = 945/2520 - Add the two like fractions:
28/2520 + 945/2520 = 28 + 945/2520 = 973/2520 - 973/2520 simplified gives 139/360
- So, 1/90 + 21/56 = 139/360
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