Add 30/4 and 21/70
1st number: 7 2/4, 2nd number: 21/70
30/4 + 21/70 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
30/4 = 30 × 35/4 × 35 = 1050/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Add the two like fractions:
1050/140 + 42/140 = 1050 + 42/140 = 1092/140 - 1092/140 simplified gives 39/5
- So, 30/4 + 21/70 = 39/5
In mixed form: 74/5
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