Add 18/54 and 40/70
18/54 + 40/70 is 19/21.
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,
18/54 = 18 × 35/54 × 35 = 630/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
40/70 = 40 × 27/70 × 27 = 1080/1890 - Add the two like fractions:
630/1890 + 1080/1890 = 630 + 1080/1890 = 1710/1890 - 1710/1890 simplified gives 19/21
- So, 18/54 + 40/70 = 19/21
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