Add 54/70 and 70/90
54/70 + 70/90 is 488/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
54/70 = 54 × 9/70 × 9 = 486/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
70/90 = 70 × 7/90 × 7 = 490/630 - Add the two like fractions:
486/630 + 490/630 = 486 + 490/630 = 976/630 - 976/630 simplified gives 488/315
- So, 54/70 + 70/90 = 488/315
In mixed form: 1173/315
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