Question

Write equation and solve.

Answer 1

46
Take 15 away from 38
=23
Then you double that
=46

Answer 2

(38 - 15) * 2 = c

c = original cards.

38 - 15 = 23

23 * 2 = 46

You started with 46 cards.

38 - 15 represents subtracting the cards you bought from the half of your original cards.

The * 2 represents multiplying the number of cards you had (without the new ones you bought) being multiplied by 2 (because you lost half of them).