Miss Galina prepare stickers for her lesson if she gives three stickers to each of her students she will have 12 stickers left if she gives five stickers to each of her students she will be for sticker short how many stickers has Messina prepared how many students are in her class

Messina has prepared 36 stickers and 8 students are in her class.

Step-by-step explanation:

Difference in remainder = 12 + 4

                                        = 16

Difference per student = 5 - 3

                                      = 2

No. of students = 16 ÷ 2

                          = 8

No. of stickers = 8 × 3 + 12 or 8 × 5 - 1

                        = 36

7 - (-11) would become 7 + 11, because the minus symbol would turn the negative into a positive. The answer is 7 + 11 = 18.