Add 45/54 and 21/70
45/54 + 21/70 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
45/54 = 45 × 35/54 × 35 = 1575/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
21/70 = 21 × 27/70 × 27 = 567/1890 - Add the two like fractions:
1575/1890 + 567/1890 = 1575 + 567/1890 = 2142/1890 - 2142/1890 simplified gives 17/15
- So, 45/54 + 21/70 = 17/15
In mixed form: 12/15
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