Answers

Add 90/84 and 80/10

1^st number: 1 6/84, 2^nd number: 8 0/10

90/84 + 80/10 is 127/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 10 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   90/84 = 90 × 5/84 × 5 = 450/420
3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
   80/10 = 80 × 42/10 × 42 = 3360/420
4. Add the two like fractions:
   450/420 + 3360/420 = 450 + 3360/420 = 3810/420
5. 3810/420 simplified gives 127/14
6. So, 90/84 + 80/10 = 127/14
   In mixed form: 91/14

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