Add 70/40 and 90/84
1st number: 1 30/40, 2nd number: 1 6/84
70/40 + 90/84 is 79/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
70/40 = 70 × 21/40 × 21 = 1470/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
90/84 = 90 × 10/84 × 10 = 900/840 - Add the two like fractions:
1470/840 + 900/840 = 1470 + 900/840 = 2370/840 - 2370/840 simplified gives 79/28
- So, 70/40 + 90/84 = 79/28
In mixed form: 223/28
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Related: 70/80+90/84