if you divide a number into 3 equal groups and then divide each group in half, you end up with 13. write an equation to express the situation. then, determine what number you started with?

x = 26

Step-by-step explanation:

Let x b the number

then x/3 (we divide x in three equal gups)

And then each group is divide in half

You end up in 13 s we have

x/3 + X/3/2 = 13

x / 3 + x/6 = 13

(2x + x) / 6 = 13

2x + x = 78

3x = 78

x = 78/3

x = 26