Add 90/70 and 42/72
1st number: 1 20/70, 2nd number: 42/72
90/70 + 42/72 is 157/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 70 × 36 = 2520,
90/70 = 90 × 36/70 × 36 = 3240/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
42/72 = 42 × 35/72 × 35 = 1470/2520 - Add the two like fractions:
3240/2520 + 1470/2520 = 3240 + 1470/2520 = 4710/2520 - 4710/2520 simplified gives 157/84
- So, 90/70 + 42/72 = 157/84
In mixed form: 173/84
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Related: 90/70+84/72