Question

-3(5a-1)+4a=2a+7(5-3a)

Answer 1

Ответ:

4,75

Пошаговое объяснение:

-3(5a-1)+4a=2a+7(5-3a)

-15а-3+4а=2а+35-21а

-11а+19а=38

8а=38

а=4,75

Answer 2

To solve the equation -3(5a - 1) + 4a = 2a + 7(5 - 3a), you can follow these steps:

1. Distribute the constants outside the parentheses: -15a + 3 + 4a = 2a + 35 - 21a

2. Combine like terms on both sides of the equation: (-15a + 4a) + 3 = (2a - 21a) + 35

3. Simplify each side of the equation separately: -11a + 3 = -19a + 35

4. Now, let's isolate the variable a on one side. You can do this by adding 19a to both sides of the equation: -11a + 19a + 3 = -19a + 19a + 35

   This simplifies to: 8a + 3 = 35

5. Next, subtract 3 from both sides to isolate 8a: 8a + 3 - 3 = 35 - 3

   This simplifies to: 8a = 32

6. Finally, divide both sides by 8 to solve for a: (8a)/8 = 32/8

   This simplifies to: a = 4

So, the solution to the equation is a = 4.