Question

8*(5x-2)=0; 15*(3x-1)=?

Answer 1

Ответ:

3

Пошаговое объяснение:

8 * (5x - 2) = 0

5x - 2 = 0

5x = 2

x = 2/5 (= 0,4)

15 * (3 * 0,4 - 1) = 15 * 0,2 = 3

Answer 2

Ответ:

Пошаговое объяснение:

8(5х - 2) = 0

40х - 16 = 0

40х = 0 + 16

40х = 16

х = 16 : 40

х = 16/40

х = 2/5

15(3х - 1) = 0

45х - 15 = 0

45х = 0 + 15

45х = 15

х = 15 : 45

х = 15/45

х = 1/3

Answer 3

To solve for the value of 15*(3x-1) given that 8*(5x-2) = 0, you can start by solving the equation 8*(5x-2) = 0 for the value of x. Once you find the value of x, you can substitute it into the expression 15*(3x-1) to find the result. Here's how you can do it:

1. Solve 8*(5x-2) = 0 for x: 8*(5x-2) = 0

   Divide both sides by 8 to isolate (5x-2): 5x-2 = 0

   Add 2 to both sides to solve for 5x: 5x = 2

   Divide both sides by 5 to find the value of x: x = 2/5

2. Now that you have the value of x, you can substitute it into 15*(3x-1) to find the result: 15*(3x-1) = 15*(3*(2/5) - 1)

   First, simplify the expression inside the parentheses: 3*(2/5) - 1 = (6/5) - 1

   To subtract fractions, find a common denominator, which is 5: (6/5) - 5/5 = (6 - 5)/5 = 1/5

   Now, substitute this result back into the original expression: 15*(1/5) = 15/5

   Finally, simplify 15/5: 15/5 = 3

So, 15*(3x-1) is equal to 3.