Add 63/4 and 21/70
1st number: 15 3/4, 2nd number: 21/70
63/4 + 21/70 is 321/20.
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,
63/4 = 63 × 35/4 × 35 = 2205/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Add the two like fractions:
2205/140 + 42/140 = 2205 + 42/140 = 2247/140 - 2247/140 simplified gives 321/20
- So, 63/4 + 21/70 = 321/20
In mixed form: 161/20
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