Add 80/90 and 72/70
1st number: 80/90, 2nd number: 1 2/70
80/90 + 72/70 is 604/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
72/70 = 72 × 9/70 × 9 = 648/630 - Add the two like fractions:
560/630 + 648/630 = 560 + 648/630 = 1208/630 - 1208/630 simplified gives 604/315
- So, 80/90 + 72/70 = 604/315
In mixed form: 1289/315
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