Add 75/72 and 42/45
1st number: 1 3/72, 2nd number: 42/45
75/72 + 42/45 is 79/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
75/72 = 75 × 5/72 × 5 = 375/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
42/45 = 42 × 8/45 × 8 = 336/360 - Add the two like fractions:
375/360 + 336/360 = 375 + 336/360 = 711/360 - 711/360 simplified gives 79/40
- So, 75/72 + 42/45 = 79/40
In mixed form: 139/40
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