Add 45/70 and 30/4
1st number: 45/70, 2nd number: 7 2/4
45/70 + 30/4 is 57/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
45/70 = 45 × 2/70 × 2 = 90/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
30/4 = 30 × 35/4 × 35 = 1050/140 - Add the two like fractions:
90/140 + 1050/140 = 90 + 1050/140 = 1140/140 - 1140/140 simplified gives 57/7
- So, 45/70 + 30/4 = 57/7
In mixed form: 81/7
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