Add 90/20 and 4/42, Solve 4 10/20 + 4/42 as a fraction

Add 90/20 and 4/42

1^st number: 4 10/20, 2^nd number: 4/42

90/20 + 4/42 is 193/42.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
90/20 = 90 × 21/20 × 21 = 1890/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
4/42 = 4 × 10/42 × 10 = 40/420
Add the two like fractions:
1890/420 + 40/420 = 1890 + 40/420 = 1930/420
1930/420 simplified gives 193/42
So, 90/20 + 4/42 = 193/42
In mixed form: 425/42

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