(3c +15)/(c2 - 5) + c/(c + 5)

= (3c + 15)/(c - 5)(c + 5) + c/(c + 5)

= (3c + 15)/(c - 5)(c + 5) + [c(c - 5)/(c + 5)(c - 5)(since the common denominator is (c + 5)(c - 5)

= (3c + 15)/(c - 5)(c + 5) + (c2 - 5c)/(c + 5)(c - 5)

= (3c + 15 + c2 - 5c)/(c - 5)(c + 5)

= (c2 - 2c + 15)/(c - 5)(c + 5)

= [(c - 5)(c + 3)]/(c - 5)(c + 5) (simplify)

= (c + 3)/(c + 5)

C = 25 + (10 x 4) = 25 + 40 = 65

5/c

The difference of c and 5 is simply c - 5. This can't be simplified, unless you assume a specific value for c.

The difference of c and 5 is simply c - 5. This can't be simplified, unless you assume a specific value for c.

The difference of c and 5 is simply c - 5. This can't be simplified, unless you assume a specific value for c.

The difference of c and 5 is simply c - 5. This can't be simplified, unless you assume a specific value for c.

C=5/9(F-32), C=5(F-32)/9, C=5(27-32)/9, C=5(-5)/9, C=-25/9, C=-2.78