Answers

Add 90/72 and 7/40

1^st number: 1 18/72, 2^nd number: 7/40

90/72 + 7/40 is 57/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   90/72 = 90 × 5/72 × 5 = 450/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   7/40 = 7 × 9/40 × 9 = 63/360
4. Add the two like fractions:
   450/360 + 63/360 = 450 + 63/360 = 513/360
5. 513/360 simplified gives 57/40
6. So, 90/72 + 7/40 = 57/40
   In mixed form: 117/40

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