Answers

Add 42/80 and 75/70

1^st number: 42/80, 2^nd number: 1 5/70

42/80 + 75/70 is 447/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 70 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   42/80 = 42 × 7/80 × 7 = 294/560
3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
   75/70 = 75 × 8/70 × 8 = 600/560
4. Add the two like fractions:
   294/560 + 600/560 = 294 + 600/560 = 894/560
5. 894/560 simplified gives 447/280
6. So, 42/80 + 75/70 = 447/280
   In mixed form: 1167/280

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