Question

1)4(x-6)=x-9 2)6-3(x+1)=7-2x 3)6.8-1.3x=0.6x-2.7 4)(8x+3)-(10x+6)=9 5)0.3(6-2y)=4.5-0.7*(y+9) Очень точно пожалуйста.

Answer 1

1.4х-24=х-9
4х-х=9+24
3х=33
х=33:3
х=11

Answer 2

1) To solve the equation 4(x-6) = x-9, we can start by distributing the 4 to both terms inside the parentheses:

4x - 24 = x - 9

Next, we can simplify the equation by moving all the x terms to one side and the constant terms to the other side:

4x - x = 24 - 9

Combining like terms, we get:

3x = 15

Finally, we can solve for x by dividing both sides of the equation by 3:

x = 5

Therefore, the solution to the equation 4(x-6) = x-9 is x = 5.

2) Let's solve the equation 6-3(x+1) = 7-2x:

First, distribute the -3 to both terms inside the parentheses:

6 - 3x - 3 = 7 - 2x

Next, simplify the equation by combining like terms:

3 - 3x = 7 - 2x

To isolate the x term, we can subtract 3 from both sides:

-3x = 4 - 2x

Now, add 2x to both sides:

-x = 4

Finally, multiply both sides by -1 to solve for x:

x = -4

Therefore, the solution to the equation 6-3(x+1) = 7-2x is x = -4.

3) Let's solve the equation 6.8 - 1.3x = 0.6x - 2.7:

First, let's move all the x terms to one side and the constant terms to the other side:

6.8 + 2.7 = 0.6x + 1.3x

Combine like terms:

9.5 = 1.9x

To solve for x, divide both sides by 1.9:

x = 9.5 / 1.9

Simplifying the right side of the equation:

x = 5

Therefore, the solution to the equation 6.8 - 1.3x = 0.6x - 2.7 is x = 5.

4) Let's solve the equation (8x+3) - (10x+6) = 9:

First, distribute the negative sign to both terms inside the parentheses:

8x + 3 - 10x - 6 = 9

Combine like terms:

-2x - 3 = 9

To isolate the x term, add 3 to both sides:

-2x = 12

Now, divide both sides by -2 to solve for x:

x = -6

Therefore, the solution to the equation (8x+3) - (10x+6) = 9 is x = -6.

5) Let's solve the equation 0.3(6-2y) = 4.5 - 0.7*(y+9):

First, distribute the 0.3 to both terms inside the parentheses:

1.8 - 0.6y = 4.5 - 0.7y - 6.3

Combine like terms:

1.8 - 0.6y = -1.8 - 0.7y

To isolate the y term, add 0.7y to both sides:

1.8 + 0.7y - 0.6y = -1.8

Combine like terms:

1.8 + 0.1y = -1.8

Next, subtract 1.8 from both sides:

0.1y = -3.6

Finally, divide both sides by 0.1 to solve for y:

y = -36

Therefore, the solution to the equation 0.3(6-2y) = 4.5 - 0.7*(y+9) is y = -36.