ratios are like fractions, and fractions are basically division problems. SO, if you divide 4 by 6 you get .66666666, and if you divide 8 by 12 you ALSO get .66666666, soooooo yes they are equivalent!
Yes they are both equal, they are both equal because if you do 4:6 first 4/6=(2/2)/ (2x3)=2/3 as 2 is a common factor for both 4 and 6. For 8:12=(4x2)/(4 × 3) = 2/3 as 4 is the common factor for both 8 and 12
