Add 72/40 and 90/45
1st number: 1 32/40, 2nd number: 2 0/45
72/40 + 90/45 is 19/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
72/40 = 72 × 9/40 × 9 = 648/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
90/45 = 90 × 8/45 × 8 = 720/360 - Add the two like fractions:
648/360 + 720/360 = 648 + 720/360 = 1368/360 - 1368/360 simplified gives 19/5
- So, 72/40 + 90/45 = 19/5
In mixed form: 34/5
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