Question

2) 2 + 4 - 3 = 22;4) 7 - 3x = 4x - 9;6) 10у - 3 = 5 + 3у.​

Answer 1

4)

-3х-4х=-9-7

-7х=-16

Х=16/7

Х=2целых 2/7

6)

10у-3у=5+3

7у=8

У=8/7

У= 1 целая 1/7

2)

z+4-3=2z

Z+1=2z

Z-2z=-1

-z=-1

Z=1

Answer 2

It seems like you've written three mathematical equations. Let's solve each of them step by step:

1. 2 + 4 - 3 = 22

First, perform the addition and subtraction:

2 + 4 - 3 = 3

Now, the equation becomes:

3 = 22

Since 3 is not equal to 22, this equation is not true. There might be a mistake in the equation or its formulation.

2. 7 - 3x = 4x - 9

To solve for x, we need to isolate x on one side of the equation. Let's do that:

Add 3x to both sides:

7 = 4x - 9 + 3x

Combine the x terms on the right side:

7 = 7x - 9

Add 9 to both sides:

7 + 9 = 7x - 9 + 9

16 = 7x

Now, isolate x by dividing both sides by 7:

x = 16 / 7

The solution for x is approximately 2.2857.

3. 10у - 3 = 5 + 3у

To solve for y, we'll again isolate y on one side of the equation:

Subtract 3y from both sides:

10y - 3y - 3 = 5 + 3y - 3y

Combine the y terms on the left side:

7y - 3 = 5

Add 3 to both sides:

7y - 3 + 3 = 5 + 3

7y = 8

Now, isolate y by dividing both sides by 7:

y = 8 / 7

The solution for y is approximately 1.1429.

So, the solutions are:

2. x ≈ 2.2857
3. y ≈ 1.1429