Question

Luisa and Sierra had 19 stamps. After Sierra gave Luisa 2 stamps, Sierra had 1 more stamp than Luisa. How many stamps did Sierra have in the beginning?

Answer 1

Sierra had 22 stamps in the beginning.

After Sierra gave Luisa 2 stamps, Luisa had 19 + 2 = <<19+2=21>>21 stamps.

We can represent the number of stamps Sierra had in the beginning with the variable S.

Since Sierra had 1 more stamp than Luisa in the beginning, we have S = 21 + 1 = <<21+1=22>>22 stamps.