Question

1) 5(x-4)=x+82) 9-7(x+3)=5-6x.....Решение подробно..... ತ_ತ​

Answer 1

Ответ:

Х=7,х=7

Пошаговое объяснение:

1)5(х-4)=х+8

5х-20=х+8

5х-х=8+20

4х=28

4х=28:

х=28:4

х=7

2)9-7(х+3)=5-6х

9-7х+21=5-6х

-7х+6х=5+9-21

-1х=-7

х= - 7:(-1)

х= 7

Answer 2

Ответ:

1)x-x=5+4-8

x=1

3)x-6x=2+3+5

5x=10

x=2

Answer 3

Sure, I'll solve the given equations step by step. Let's start with the first equation:

1. 5(x - 4) = x + 8

Step 1: Distribute the 5 on the left-hand side.

5x - 20 = x + 8

Step 2: Move all the x terms to one side and the constants to the other side.

5x - x = 8 + 20

Step 3: Simplify.

4x = 28

Step 4: Divide both sides by 4 to solve for x.

x = 28 / 4

x = 7

Now, let's move on to the second equation:

2. 9 - 7(x + 3) = 5 - 6x

Step 1: Distribute the -7 on the left-hand side.

9 - 7x - 21 = 5 - 6x

Step 2: Combine like terms on both sides.

-7x - 12 = -6x + 5

Step 3: Move all the x terms to one side and the constants to the other side.

-7x + 6x = 5 + 12

Step 4: Simplify.

-x = 17

Step 5: Multiply both sides by -1 to solve for x (to make the x positive).

x = -17

So, the solutions to the given equations are:

1. x = 7
2. x = -17