Answers

Add 18/42 and 42/40

1^st number: 18/42, 2^nd number: 1 2/40

18/42 + 42/40 is 207/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 42 × 20 = 840,
   18/42 = 18 × 20/42 × 20 = 360/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   42/40 = 42 × 21/40 × 21 = 882/840
4. Add the two like fractions:
   360/840 + 882/840 = 360 + 882/840 = 1242/840
5. 1242/840 simplified gives 207/140
6. So, 18/42 + 42/40 = 207/140
   In mixed form: 167/140

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