Question

3(х+5)=5-2х 7х+2(8-3х)=5х+20

Answer 1

1) 3х+15=5-2х
3х+2х=5-15
5х=-10
х= -10/5
х= -2

2) 7х+16+6х=5х+20
13х-5х=20-16
8х=4
х=4/8
х=1/2
х= 0,5

Answer 2

Ответ:-2

-1

Пошаговое объяснение:

Answer 3

Let's solve each equation step by step.

1. Solve 3(х+5) = 5 - 2х:

First, distribute the 3 on the left side of the equation:

3х + 15 = 5 - 2х

Next, move all the terms containing х to one side of the equation and the constants to the other side:

3х + 2х = 5 - 15

Combine like terms:

5х = -10

Now, divide both sides by 5 to isolate х:

(5х)/5 = (-10)/5

х = -2

So, the solution for the first equation is х = -2.

2. Solve 7х + 2(8 - 3х) = 5х + 20:

First, distribute the 2 inside the parentheses on the left side of the equation:

7х + 16 - 6х = 5х + 20

Next, move all the terms containing х to one side of the equation and the constants to the other side:

7х - 6х - 5х = 20 - 16

Combine like terms:

-4х = 4

Now, divide both sides by -4 to isolate х:

(-4х)/(-4) = 4/(-4)

х = -1

So, the solution for the second equation is х = -1.

To summarize:

1. For the first equation, х = -2.
2. For the second equation, х = -1.