Question

7(10 — 4x) + 5x = 12 — 3(5x + 2)

Answer 1

Ответ:

х = 8.

Пошаговое объяснение:

$7(10 - 4x) + 5x = 12 - 3(5x + 2)$

$7 * 10 = 7 * (-4x) + 5x = 12 - 3 * 5x + (-3) * 2$

$70 - 28x + 5x = 12 - 15x - 6$

$-28x + 5x + 15x = 12 - 6 - 70$

$-8x = -64\\x = 8.$

минус на минус при делении и умножении дают плюс.

Answer 2

To solve the given equation, let's simplify the expressions on both sides and solve for the variable x.

7(10 - 4x) + 5x = 12 - 3(5x + 2)

First, let's distribute the 7 and the 3:

70 - 28x + 5x = 12 - 15x - 6

Now, combine like terms:

-28x + 5x + 15x = 12 - 70 + 6

-8x = -52

Next, divide both sides by -8 to isolate x:

(-8x) / -8 = (-52) / -8

Simplifying:

x = 6.5

Therefore, the solution to the equation is x = 6.5.