Solutions by everydaycalculation.com

318 - 69 is -12.

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

LCM of 18 and 9 is**18** - For the 1st fraction, since 18 × 1 = 18,

318 = 3 × 118 × 1 = 318 - Likewise, for the 2nd fraction, since 9 × 2 = 18,

69 = 6 × 29 × 2 = 1218 - Subtract the two fractions:

318 - 1218 = 3 - 1218 = -918 - After reducing the fraction, the answer is -12

Related: ^{6}/_{18}-^{6}/_{9} ^{3}/_{18}-^{12}/_{9} ^{3}/_{36}-^{6}/_{9} ^{3}/_{18}-^{6}/_{18} ^{9}/_{18}-^{6}/_{9} ^{3}/_{18}-^{18}/_{9} ^{3}/_{54}-^{6}/_{9} ^{3}/_{18}-^{6}/_{27} ^{15}/_{18}-^{6}/_{9} ^{3}/_{18}-^{30}/_{9} ^{3}/_{90}-^{6}/_{9} ^{3}/_{18}-^{6}/_{45} ^{21}/_{18}-^{6}/_{9} ^{3}/_{18}-^{42}/_{9} ^{3}/_{18}-^{6}/_{63}

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