Add 72/70 and 45/90
1st number: 1 2/70, 2nd number: 45/90
72/70 + 45/90 is 107/70.
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,
45/90 = 45 × 7/90 × 7 = 315/630 - Add the two like fractions:
648/630 + 315/630 = 648 + 315/630 = 963/630 - 963/630 simplified gives 107/70
- So, 72/70 + 45/90 = 107/70
In mixed form: 137/70
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