Solutions by everydaycalculation.com

121 + 68 is 6784.

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

LCM of 21 and 8 is**168** - For the 1st fraction, since 21 × 8 = 168,

121 = 1 × 821 × 8 = 8168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,

68 = 6 × 218 × 21 = 126168 - Add the two fractions:

8168 + 126168 = 8 + 126168 = 134168 - After reducing the fraction, the answer is 6784

Related: ^{2}/_{21}+^{6}/_{8} ^{1}/_{21}+^{12}/_{8} ^{1}/_{42}+^{6}/_{8} ^{1}/_{21}+^{6}/_{16} ^{3}/_{21}+^{6}/_{8} ^{1}/_{21}+^{18}/_{8} ^{1}/_{63}+^{6}/_{8} ^{1}/_{21}+^{6}/_{24} ^{5}/_{21}+^{6}/_{8} ^{1}/_{21}+^{30}/_{8} ^{1}/_{21}+^{6}/_{40} ^{7}/_{21}+^{6}/_{8} ^{1}/_{21}+^{42}/_{8} ^{1}/_{21}+^{6}/_{56}

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