Add 21/70 and 45/75
21/70 + 45/75 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 75 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 70 × 15 = 1050,
21/70 = 21 × 15/70 × 15 = 315/1050 - Likewise, for the 2nd fraction, since 75 × 14 = 1050,
45/75 = 45 × 14/75 × 14 = 630/1050 - Add the two like fractions:
315/1050 + 630/1050 = 315 + 630/1050 = 945/1050 - 945/1050 simplified gives 9/10
- So, 21/70 + 45/75 = 9/10
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