Added more test cases for fraction.lcm
Added more test cases for fraction.lcm

devanp92/mathjs,josdejong/mathjs,josdejong/mathjs,FSMaxB/mathjs,luke-gumbley/mathjs,devanp92/mathjs,mcanthony/mathjs,FSMaxB/mathjs,josdejong/mathjs,FSMaxB/mathjs,FSMaxB/mathjs,FSMaxB/mathjs,luke-gumbley/mathjs,mcanthony/mathjs,josdejong/mathjs,josdejong/mathjs