Question

-9(x - 4y) = 5( 7a -3в ) = -10(a + 3в) = -(x + 7-4y) =

Answer 1

если нужно раскрыть скобки без формул , то:

Пошаговое объяснение:

-9х+36у

35а-15в

-10а-30в

-х-7+4у

Answer 2

It appears you have a system of equations with multiple variables and expressions. Let's break down and solve each equation separately:

1. -9(x - 4y) = 5(7a - 3в):

   First, distribute the constants on both sides: -9x + 36y = 35a - 15в

2. 5(7a - 3в) = -10(a + 3в):

   Again, distribute the constants: 35a - 15в = -10a - 30в

   Now, simplify by moving all the terms involving 'a' to one side and all the terms involving 'в' to the other side: 35a + 10a = -15в + 30в

   Combine like terms: 45a = 15в

   Divide both sides by 45 to isolate 'a': a = (15в) / 45

   Simplify the right side: a = в / 3

3. -(x + 7 - 4y):

   This equation doesn't equal any specific value or expression as it is. It's simply the negation of the quantity (x + 7 - 4y). If you have additional equations or information, please provide them for further solving.

So, you have found the value of 'a' in terms of в (a = в/3), and the first equation is simplified to -9x + 36y = 35a - 15в. If you need to solve for 'x' or 'y,' you would need more information or additional equations involving those variables.