Add 4/42 and 54/80
4/42 + 54/80 is 647/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
4/42 = 4 × 40/42 × 40 = 160/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
54/80 = 54 × 21/80 × 21 = 1134/1680 - Add the two like fractions:
160/1680 + 1134/1680 = 160 + 1134/1680 = 1294/1680 - 1294/1680 simplified gives 647/840
- So, 4/42 + 54/80 = 647/840
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