Question

-4(2x-5)+3(5x-7)=-15​

Answer 1

Ответ:

-4(2x-5)+3(5x-7)=-15​

-8x+20+15x-21= -15

7x-1=-15

7x= -15+1

7x= -14

x= -2.

Можно лучший ответ? :D

Answer 2

Ответ:

х= -2

Пошаговое объяснение:

вот.. я посчитала так, НО Я НЕ УВЕРЕНА...

Answer 3

To solve the equation -4(2x - 5) + 3(5x - 7) = -15, you'll need to apply the distributive property and simplify the expression. Here are the steps:

1. Distribute the constants outside the parentheses to the terms inside: -4 * 2x + (-4 * -5) + 3 * 5x + 3 * (-7) = -15

2. Simplify each term: -8x + 20 + 15x - 21 = -15

3. Combine like terms on both sides of the equation: (-8x + 15x) + (20 - 21) = -15 7x - 1 = -15

4. Add 1 to both sides of the equation to isolate the variable (x): 7x - 1 + 1 = -15 + 1 7x = -14

5. Finally, divide both sides by 7 to solve for x: 7x/7 = -14/7 x = -2

So, the solution to the equation is x = -2.