Solutions by everydaycalculation.com

421 + 56 is 4342.

- Find the least common denominator or LCM of the two denominators:

LCM of 21 and 6 is**42** - For the 1st fraction, since 21 × 2 = 42,

421 = 4 × 221 × 2 = 842 - Likewise, for the 2nd fraction, since 6 × 7 = 42,

56 = 5 × 76 × 7 = 3542 - Add the two fractions:

842 + 3542 = 8 + 3542 = 4342 - In mixed form: 1142

Related: ^{8}/_{21}+^{5}/_{6} ^{4}/_{21}+^{10}/_{6} ^{4}/_{42}+^{5}/_{6} ^{4}/_{21}+^{5}/_{12} ^{12}/_{21}+^{5}/_{6} ^{4}/_{21}+^{15}/_{6} ^{4}/_{63}+^{5}/_{6} ^{4}/_{21}+^{5}/_{18} ^{20}/_{21}+^{5}/_{6} ^{4}/_{21}+^{25}/_{6} ^{4}/_{21}+^{5}/_{30} ^{28}/_{21}+^{5}/_{6} ^{4}/_{21}+^{35}/_{6} ^{4}/_{21}+^{5}/_{42}

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