Question

-3•(5a-1)+4a=2a+7•(5-3a)​

Answer 1

-15a+3+4a=2a+35-21a
-15a+4a+21a-2a=35-3
8a=32
a=4

Відповідь:4

Answer 2

To solve the equation -3(5a - 1) + 4a = 2a + 7(5 - 3a), you'll need to simplify and then isolate the variable, 'a.' Here's how you can do it step by step:

1. Distribute the values on both sides of the equation to get rid of the parentheses:

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

This becomes:

-15a + 3 + 4a = 2a + 35 - 21a

2. Now, combine like terms on both sides of the equation:

(-15a + 4a) + 3 = (2a - 21a) + 35

This simplifies to:

-11a + 3 = -19a + 35

3. Next, add 19a to both sides of the equation to isolate 'a' terms on one side:

-11a + 3 + 19a = -19a + 35 + 19a

This simplifies to:

8a + 3 = 35

4. Now, subtract 3 from both sides:

8a + 3 - 3 = 35 - 3

This simplifies to:

8a = 32

5. Finally, divide by 8 to find the value of 'a':

(8a) / 8 = 32 / 8

a = 4

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