Robin has 180 stickers. how many pages of 10 stickers does she need so that she will have 200 stickers in all

For this case, the first thing we must do is define variables.

We have then:

x: number of pages

y: amount of total stickers

We write the expression that models the problem:

For 200 stickers we have:

From here, we clear the value of x:

She needs 2 additional pages of 10 stickers to be able to have 200 stickers in total.