Question

20*a - 432 = 568 - x + 579= 309*3 x - 465 = 76*5

Answer 1

20 • а - 432 = 568

20а - 432 = 568

20а = 568 + 432

20а = 1000

а = 1000 / 20

а = 50

Ответ : 50

Проверка :

20 • 50 - 432 = 568

1000 - 432 = 568

568 = 568

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х + 579 = 309 • 3

х + 579 = 927

х = 927 - 579

х = 348

Ответ : 348

Проверка :

348 + 579 = 309 • 3

927 = 927

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х - 465 = 76 • 5

х - 465 = 380

х = 380 + 465

х = 845

Ответ : 845

Проверка :

845 - 465 = 76 • 5

380 = 380

Answer 2

1)20*a -432=568

a=568-432

a=136:20

a=6,8

20*6,8-432=568

2)x + 579=309*3

x=309*3

x=927

x+579=927

x=927-579

x=348

348+579=927

348+579=309*3

3)x-465=76*5

x=76*5

x=380

x-465=380

x=465+380

x=845

845-465=380

845-465=76*5

Answer 3

It seems like you have a system of equations with multiple variables. Let's break it down and solve for the variables a and x.

1. 20a - 432 = 568 - x + 579
2. x - 465 = 76 * 5

First, let's simplify equation 1:

20a - 432 = 568 - x + 579

Combine like terms:

20a - 432 = 1147 - x

Now, let's isolate x in terms of a:

x = 20a - 432 - 1147

x = 20a - 1579

Next, let's solve equation 2:

x - 465 = 76 * 5

x - 465 = 380

Now, add 465 to both sides to isolate x:

x = 380 + 465

x = 845

Now that we have found the value of x, we can substitute it into equation 1 to solve for a:

20a - 432 = 1147 - x

20a - 432 = 1147 - 845

20a - 432 = 302

Now, add 432 to both sides to isolate 20a:

20a = 302 + 432

20a = 734

Finally, divide both sides by 20 to find the value of a:

a = 734 / 20

a = 36.7

So, the solutions to the system of equations are:

a ≈ 36.7 x = 845