Answers

Add 30/63 and 42/80

30/63 + 42/80 is 841/840.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   30/63 = 30 × 80/63 × 80 = 2400/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   42/80 = 42 × 63/80 × 63 = 2646/5040
4. Add the two like fractions:
   2400/5040 + 2646/5040 = 2400 + 2646/5040 = 5046/5040
5. 5046/5040 simplified gives 841/840
6. So, 30/63 + 42/80 = 841/840
   In mixed form: 11/840

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