Add 54/21 and 90/35
1st number: 2 12/21, 2nd number: 2 20/35
54/21 + 90/35 is 36/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
54/21 = 54 × 5/21 × 5 = 270/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
90/35 = 90 × 3/35 × 3 = 270/105 - Add the two like fractions:
270/105 + 270/105 = 270 + 270/105 = 540/105 - 540/105 simplified gives 36/7
- So, 54/21 + 90/35 = 36/7
In mixed form: 51/7
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