Solutions by everydaycalculation.com

121 + 45 is 89105.

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

LCM of 21 and 5 is**105** - For the 1st fraction, since 21 × 5 = 105,

121 = 1 × 521 × 5 = 5105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,

45 = 4 × 215 × 21 = 84105 - Add the two fractions:

5105 + 84105 = 5 + 84105 = 89105

Related: ^{2}/_{21}+^{4}/_{5} ^{1}/_{21}+^{8}/_{5} ^{1}/_{42}+^{4}/_{5} ^{1}/_{21}+^{4}/_{10} ^{3}/_{21}+^{4}/_{5} ^{1}/_{21}+^{12}/_{5} ^{1}/_{63}+^{4}/_{5} ^{1}/_{21}+^{4}/_{15} ^{5}/_{21}+^{4}/_{5} ^{1}/_{21}+^{20}/_{5} ^{1}/_{21}+^{4}/_{25} ^{7}/_{21}+^{4}/_{5} ^{1}/_{21}+^{28}/_{5} ^{1}/_{21}+^{4}/_{35}

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