Question

5*(x-4)=x+8 9-7*(х+3)=5-6х 3,6+5у=7*(1,2-у) 0,4*(6-4t)=0,5(7-3t)

Answer 1

Ответ:

x = 7

x = - 17

y = 0.4

t = - 11

Пошаговое объяснение:

скачай Photomath

Answer 2

Ответ:

все ответы на фото............

Answer 3

Let's solve each of these equations one by one:

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

First, distribute the 5 on the left side of the equation:

5x - 20 = x + 8

Now, let's isolate the variable x by moving x to one side of the equation and constants to the other side:

5x - x = 8 + 20

Combine like terms:

4x = 28

Now, divide both sides by 4 to solve for x:

4x/4 = 28/4

x = 7

So, the solution to the first equation is x = 7.

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

First, distribute the -7 on the left side of the equation:

9 - 7x - 21 = 5 - 6x

Now, let's isolate the variable x by moving x terms to one side of the equation and constants to the other side:

-7x + 6x = 5 - 9 + 21

Combine like terms:

-1x = 17

Now, divide both sides by -1 to solve for x:

(-1x)/(-1) = 17/(-1)

x = -17

So, the solution to the second equation is x = -17.

3. 3.6 + 5y = 7*(1.2 - y)

First, distribute the 7 on the right side of the equation:

3.6 + 5y = 8.4 - 7y

Now, let's isolate the variable y by moving y terms to one side of the equation and constants to the other side:

5y + 7y = 8.4 - 3.6

Combine like terms:

12y = 4.8

Now, divide both sides by 12 to solve for y:

12y/12 = 4.8/12

y = 0.4

So, the solution to the third equation is y = 0.4.

4. 0.4*(6 - 4t) = 0.5(7 - 3t)

First, distribute the 0.4 and 0.5 on their respective sides of the equation:

2.4 - 1.6t = 3.5 - 1.5t

Now, let's isolate the variable t by moving t terms to one side of the equation and constants to the other side:

-1.6t + 1.5t = 3.5 - 2.4

Combine like terms:

-0.1t = 1.1

Now, divide both sides by -0.1 to solve for t:

(-0.1t)/(-0.1) = 1.1/(-0.1)

t = -11

So, the solution to the fourth equation is t = -11.