Question

Help on questions 11 and 15 Add and simplify if possible

Answer 1

`(16+x)/(x^(3) ) + (7-4x)/( x^(3) ) \\ 16+x+7-4x = 23-3x \\ (23 -3x)/( x^(3) )`
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`(5)/(t-1) +(3)/(t) \\ \\ (5t+(t-1)(3))/((t-1)(t)) \\ \\ (5t+3t-3)/( t^(2)-t ) \\ \\ (8t-3)/( t^(2)-t )`

Answer 2

`(16+x)/(x^3)+(7-4x)/(x^3)=(16+x+7-4x)/(x^3)=(23-3x)/(x^3)\\\\======================================\\\\(5)/(t-1)+(3)/(t)=(5t)/(t(t-1))+(3(t-1))/(t(t-1))=(5t+3t-3)/(t^2-t)=(8t-3)/(t^2-t)`