Question

20=26-(х-4) СРОЧНО3х - (2х - 5)=15​

Answer 1

Объяснение:

$20 = 26 - (x - 4) \\ 20 = 26 - x + 4 \\ x = 30 - 20 \\ x = 10 \\ \\ 3x - (2x - 5) = 15 \\ 3x - 2x + 5 = 15 \\ x = 15 - 5 \\ x = 10$

Answer 2

20=26-(х-4)

20+26=х-4

46=х-4

х=46+4

х=50.

3х - (2х - 5)=15

3х - 2х - 5=15

1х-5=15

х-5=15

х=15+5

х=20

Answer 3

Let's solve the equations step by step.

1. 20 = 26 - (х - 4)

To solve for x, first, we need to remove the parentheses:

20 = 26 - x + 4

Now, combine like terms:

20 = 30 - x

Next, isolate x on one side of the equation. We can do this by subtracting 30 from both sides:

20 - 30 = 30 - x - 30

-10 = -x

Now, to find the value of x, multiply both sides by -1 (to get rid of the negative sign):

-1 * -10 = -x * -1

10 = x

So, the solution to the first equation is x = 10.

2. 3x - (2x - 5) = 15

To solve for x, first, remove the parentheses:

3x - 2x + 5 = 15

Now, combine like terms:

x + 5 = 15

Next, isolate x on one side of the equation. We can do this by subtracting 5 from both sides:

x + 5 - 5 = 15 - 5

x = 10

So, the solution to the second equation is x = 10.

The solutions to the two equations are x = 10 in both cases.