Question

1)18-16x=-30x-10 2)-7x+2=3x-1 3)10-2x=12+x /\/2 Найти корень уравнения: 1)10x+7=8x-9 2)20-3x=2x-45 Решите пожалуйста)

Answer 1

1)18-16x=-30x-10

30х-16х=-10-18

14х=-28

х=-28:14

х=-2

2)-7x+2=3x-1

-7х-3х=-1-2

-10х=-3

х=-3:(-10)

х=0.3

3)10-2x=12+x

-2х-х=12-10

-3х=2

х=2:(-3)

х=-2/3

1)10x+7=8x-9

10х-8х=-9-7

-2х=-16

х=-16:(-2)

х=8

2)20-3x=2x-45

-3х-2х=-45-20

-5х=-65

х=-65:(-5)

х=13

Answer 2

1) - 16х+30х=-10-18
14х=-28
х=-2
2) - 7х+2=3х-1
-7х-3х=-1-2
-10х=-3
х=0.3
3) 10-2х=12+х
-2х-х=12-10
-3х=2
х=-2/3
N2
1) 10x+7=8x-9
10x-8x=-9-7
2x=-16
x=-8
2) 20-3x=2x-45
-3x-2x=-45-20
-5x=-65
x=13

Answer 3

Sure, let's solve the equations one by one:

1. 18 - 16x = -30x - 10

To solve this equation, we'll first combine the x terms on one side and the constants on the other side:

Add 30x to both sides: 18 + 14x = -10

Now, isolate the x term by subtracting 18 from both sides: 14x = -28

Finally, divide both sides by 14 to get the value of x: x = -28 / 14 x = -2

So, the solution to the first equation is x = -2.

2. -7x + 2 = 3x - 1

First, combine the x terms on one side and the constants on the other side:

Add 7x to both sides: 2 = 10x - 1

Now, isolate the x term by adding 1 to both sides: 3 = 10x

Finally, divide both sides by 10 to find the value of x: x = 3 / 10 x = 0.3

So, the solution to the second equation is x = 0.3.

3. (10 - 2x) / 2 = 12 + x

To solve this equation, we'll first get rid of the fraction by multiplying both sides by 2:

2 * ((10 - 2x) / 2) = 2 * (12 + x)

Simplify: 10 - 2x = 24 + 2x

Now, let's isolate the x terms on one side and the constants on the other side:

Add 2x to both sides: 10 = 24 + 4x

Subtract 24 from both sides: -14 = 4x

Finally, divide both sides by 4 to find the value of x: x = -14 / 4 x = -3.5

So, the solution to the third equation is x = -3.5.

Next, let's find the roots of the two equations:

1. 10x + 7 = 8x - 9

First, combine the x terms on one side and the constants on the other side:

Subtract 8x from both sides: 2x + 7 = -9

Now, isolate the x term by subtracting 7 from both sides: 2x = -16

Finally, divide both sides by 2 to get the value of x: x = -16 / 2 x = -8

So, the root of the first equation is x = -8.

2. 20 - 3x = 2x - 45

First, combine the x terms on one side and the constants on the other side:

Add 3x to both sides: 20 = 5x - 45

Now, isolate the x term by adding 45 to both sides: 65 = 5x

Finally, divide both sides by 5 to find the value of x: x = 65 / 5 x = 13

So, the root of the second equation is x = 13.

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