Add 45/90 and 16/21
45/90 + 16/21 is 53/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
16/21 = 16 × 30/21 × 30 = 480/630 - Add the two like fractions:
315/630 + 480/630 = 315 + 480/630 = 795/630 - 795/630 simplified gives 53/42
- So, 45/90 + 16/21 = 53/42
In mixed form: 111/42
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