Add 30/70 and 30/72
30/70 + 30/72 is 71/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 70 × 36 = 2520,
30/70 = 30 × 36/70 × 36 = 1080/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
30/72 = 30 × 35/72 × 35 = 1050/2520 - Add the two like fractions:
1080/2520 + 1050/2520 = 1080 + 1050/2520 = 2130/2520 - 2130/2520 simplified gives 71/84
- So, 30/70 + 30/72 = 71/84
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