Question

Помогите пожалуйсто очень очень надо) Надо решить линейное уравнение а) 2x + 18 = 3x -16 б) x : 1,8 = 9 7/ 9 в) 4 (x -16) = 2 ( 2x-8) г) 6 ( 3x-7) = 3 (6x-7) д) 1,2 - (x-2) - 0,2 (x-4) = 2 ( x - 3,8) помогите плизз очень надо

Answer 1

а) 2x + 18 = 3x -16
2x-3x=-16-18
-x=-34
x=34

б) x : 1,8 = 9 7/ 9
x=1,8* 9 7/ 9
x=1,8* 88/ 9
x=0.2*88
x=17.6

 в) 4 (x -16) ≠ 2 ( 2x-8)
4 (x -16) ≠2 ( 2(x-4)
4 (x -16) ≠4(x-4)
x-16≠x-4
x-x≠12
0≠12
Уравнения решений не имеет

 г) 6 ( 3x-7) ≠ 3 (6x-7)
18x-42 ≠ 18x-21
18х-18х≠-21+42
0≠21
Уравнения решений не имеет

д) 1,2 - (x-2) - 0,2 (x-4) = 2 ( x - 3,8)
1,2 - x+2 - 0,2x+0,8 = 2 x - 7.6
-х-0.2х-2х= - 7.6 - 1.2 - 0.8-2
-3.2х= - 11.6
3.2х= 11.6
х=3, 625

Answer 2

Solving Linear Equations

Let's solve each of the given linear equations step by step.

# Equation a) 2x + 18 = 3x - 16

To solve for x, we can start by isolating the variable on one side of the equation.

Subtract 2x from both sides: 2x - 2x + 18 = 3x - 2x - 16 18 = x - 16

Add 16 to both sides: 18 + 16 = x - 16 + 16 34 = x

So, x = 34.

# Equation б) x ÷ 1.8 = 9 + 7/9

To solve for x, we can multiply both sides by 1.8 to isolate x.

x = 1.8 * (9 + 7/9) x = 1.8 * 9 + 1.8 * 7/9 x = 16.2 + 1.4 x = 17.6

So, x = 17.6.

# Equation в) 4(x - 16) = 2(2x - 8)

To solve for x, we can start by distributing the numbers inside the parentheses.

4x - 64 = 4x - 16

After simplifying, we find that the equation simplifies to -64 = -16, which is not a valid equation. This means that there is no solution for this equation.

# Equation г) 6(3x - 7) = 3(6x - 7)

To solve for x, we can start by distributing the numbers inside the parentheses.

18x - 42 = 18x - 21

After simplifying, we find that the equation simplifies to -42 = -21, which is not a valid equation. This means that there is no solution for this equation.

# Equation д) 1.2 - (x - 2) - 0.2(x - 4) = 2(x - 3.8)

To solve for x, we can start by simplifying the equation step by step.

1.2 - x + 2 - 0.2x + 0.8 = 2x - 7.6 3 - 1.2x = 2x - 7.6 3 + 7.6 = 2x + 1.2x 10.6 = 3.2x x = 10.6 / 3.2 x ≈ 3.3125

So, x ≈ 3.3125.

I hope this helps! If you have any more questions or need further assistance, feel free to ask.