Evaluate `^13C_6+^13C_5``

Evaluate: 6.9 xx 13

Evaluate : ""^(13)C_(10)

The value of .^(13)C_(7)+.^(13)C_(8)+.^(13)C_(9)+.^(13)C_(10)+.^(13)C_(11)+.^(13)C_(12)+.^(13)C_(13) is equal to

Evaluate: (7)/(13)-(6)/(13)

Evaluate: (-3)/(13)+((-5)/(13))

Evaluate : a. 181^(13)-:181^(13) b. 275^(0) c. 2(2^(0)+2^(1)+2^(2))

Evaluate: sin(cos^(-1)3/5+cos e c^(-1)(13)/5)

Evaluate: sin(cos^(-1)3/5+cos e c^(-1)(13)/5)

Evaluate: (12)/(5)+(-13)/(6)

Evaluate the sum: 6/(13)+3/(4)