Add 42/45 and 4/72
42/45 + 4/72 is 89/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
42/45 = 42 × 8/45 × 8 = 336/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
4/72 = 4 × 5/72 × 5 = 20/360 - Add the two like fractions:
336/360 + 20/360 = 336 + 20/360 = 356/360 - 356/360 simplified gives 89/90
- So, 42/45 + 4/72 = 89/90
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