Умоляю помогите
Раскройте скобки и упростите выражение:
№1.
а) 2x – (2x + y) + y =
б) – a + (2a – b) + 2b =
в) 7 – (b + 14) – 2b =
г) 3b – (18 + b) + 8 =
№2.
а) 2(3 – x) – (8 + x) =
б) – 4(y + 5) + (12 – y) =
в) – (7 – x) + 4(x – 5) =
г) – 9(y – 4) – (12 + y) =
№3. Решите уравнение:
а) 3x – 5x = -−13 +3
б) – 5y –17y = -−50 +6
в) a –12a = -−6 − 27
г) –27x –33x = –12 ∙ (−-5)
№4. Раскройте скобки и упростите выражения:
–12(7 −2d) –9(7d –5) –3(15 +8d) =

Cameron indoor stadium at duke university is one of the most revered sites in all of college basketball, as well as in all of sports period. duke’s men’s and women’s basketball programs have attained quite a few wins in the building over the last seventy years. cameron indoor stadium is capable of seating 9,460 people. for each game, the amount of money that the duke blue devils’ athletic program brings in as revenue is a function of the number of people in attendance. if each ticket costs $45.50, find the domain and range of this function.

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?