ratios with the same denominator of 2:3 and 3:4
normally we doa:b to a/b2:3 to 2/33:4 to 3/4look at denoms3 and 42/3 times 4/4=8/123/4 times 3/3=9/122:3 and 3:4 is to 8:12 and 9:12