Question

А)3х – 3,89= - 3,5х – 5,84; б)5(3х+1) – 15 = 2(5х – 1).

Answer 1

Ответ:

а) х = -0,3 б) х = 1,6

Пошаговое объяснение:

Ответ

Answer 2

Let's solve the two equations step by step:

А) 3x - 3.89 = -3.5x - 5.84

First, we want to combine the x terms on one side of the equation and the constant terms on the other side. To do this, let's add 3.5x to both sides and add 3.89 to both sides:

3x + 3.5x - 3.89 = -5.84

Now, combine the x terms:

6.5x - 3.89 = -5.84

Next, we want to get rid of the constant term on the left side of the equation. Let's add 3.89 to both sides:

6.5x = -5.84 + 3.89

6.5x = -1.95

Finally, divide both sides by 6.5 to solve for x:

x = -1.95 / 6.5

x ≈ -0.3

So, the value of x that satisfies the equation is approximately -0.3.

б) 5(3x + 1) - 15 = 2(5x - 1)

First, distribute the multiplication on both sides:

15x + 5 - 15 = 10x - 2

Now, combine like terms:

15x - 10x = -2 - 5 + 15

5x = 8

Finally, divide both sides by 5 to solve for x:

x = 8 / 5

x = 1.6

So, the value of x that satisfies the equation is 1.6.