Add 72/70 and 6/90
1st number: 1 2/70, 2nd number: 6/90
72/70 + 6/90 is 23/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
72/70 = 72 × 9/70 × 9 = 648/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
6/90 = 6 × 7/90 × 7 = 42/630 - Add the two like fractions:
648/630 + 42/630 = 648 + 42/630 = 690/630 - 690/630 simplified gives 23/21
- So, 72/70 + 6/90 = 23/21
In mixed form: 12/21
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