Suppose 314f(x)dx=19\displaystyle {\int_{{3}}^{{14}}}{f{{\left({x}\right)}}}{\left.{d}{x}\right.}={19}. Find 143f(x)dx\displaystyle {\int_{{14}}^{{3}}}{f{{\left({x}\right)}}}{\left.{d}{x}\right.}.

143f(x)dx\displaystyle {\int_{{14}}^{{3}}}{f{{\left({x}\right)}}}{\left.{d}{x}\right.} =