Add 90/70 and 70/49
1st number: 1 20/70, 2nd number: 1 21/49
90/70 + 70/49 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
90/70 = 90 × 7/70 × 7 = 630/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
70/49 = 70 × 10/49 × 10 = 700/490 - Add the two like fractions:
630/490 + 700/490 = 630 + 700/490 = 1330/490 - 1330/490 simplified gives 19/7
- So, 90/70 + 70/49 = 19/7
In mixed form: 25/7
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