Answers

Add 54/70 and 84/18

1^st number: 54/70, 2^nd number: 4 12/18

54/70 + 84/18 is 571/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 18 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   54/70 = 54 × 9/70 × 9 = 486/630
3. Likewise, for the 2nd fraction, since 18 × 35 = 630,
   84/18 = 84 × 35/18 × 35 = 2940/630
4. Add the two like fractions:
   486/630 + 2940/630 = 486 + 2940/630 = 3426/630
5. 3426/630 simplified gives 571/105
6. So, 54/70 + 84/18 = 571/105
   In mixed form: 546/105

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