Anthony already has 8 stickers, and he will get 21 additional stickers from each sticker pack he buys. How many sticker packs does Anthony have to buy to have a total of 50 stickers?​

2 packs.

Step-by-step explanation:

Each sticker pack is 21 stickers and you would want to get 50 in total.

Since he already has 8 stickers, the initial value is 8.

So, 50-8 is 42. That means Anthony would need 42 more stickers to reach 50.

At this point, you can do division and that would give you 2.

You can check your work by working backwards and seeing that 2(21)=42.

42+8=50.