Add 42/84 and 40/25
1st number: 42/84, 2nd number: 1 15/25
42/84 + 40/25 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 25 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
42/84 = 42 × 25/84 × 25 = 1050/2100 - Likewise, for the 2nd fraction, since 25 × 84 = 2100,
40/25 = 40 × 84/25 × 84 = 3360/2100 - Add the two like fractions:
1050/2100 + 3360/2100 = 1050 + 3360/2100 = 4410/2100 - 4410/2100 simplified gives 21/10
- So, 42/84 + 40/25 = 21/10
In mixed form: 21/10
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