a) 12/28=6/14 ; 24/56 ; 3/7 b)125/15=25/3 ; 250/30 ; 500/60 c)2^3/8=16/16 ;32/32 ; 64/64 d)1/3=2/6 ; 4/12 ; 6/24

[latex] frac{12}{28} = frac{6}{14} = frac{3}{7} = frac{15}{35} [/latex] [latex] frac{125}{15} = frac{25}{3} = frac{75}{9} = frac{250}{30} [/latex] [latex] frac{ 2^{3} }{8} = frac{8}{8} = frac{4}{4} = frac{2}{2} = frac{1}{1} [/latex] [latex] frac{1}{3} = frac{6}{18} = frac{3}{9} = frac{10}{30} [/latex]