Iar eu; plis 1 lei ) lei b)creaza o problema dupa exercitiu; 10*20*6=? limonada oranjada total c)dupa tabel; erau-13.470 ? 30.000 ? ? s-au vandut-4.509 au ramas-? 5.820 ?

Cosmina are 19 lei , ea primeste 6 cartonase in valoare de 3 lei si decide sa isi cumpere o revista a carui pret este cu 50% mai mic , pretul initial fiind 18 lei. Cu cati bani ramene Cosmina ? 
19 + 6 × 3 - 18 : 2 
= 19 + 18 - 9
= 37 - 9 
= 28 lei

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.