Question

1,2x+1=1-x0,8а+14=2-1,6а12-(4х-18) =(36+4х) +(18-6х) 2х+5=2(х+1) +11Срооочноо​

Answer 1

Решение:

1,2x + 1 = 1 - x

2,2x + 1 = 1

2,2x = 0

x = 0

0,8a + 14 = 2 - 1,6a

2a + 14 = 2

2a = -12

a = -6

12 - (4x - 18) = (36 + 4x) + (18 - 6x)

12 - 4x + 18 = 36 + 4x + 18 - 6x

30 - 4x = 54 - 2x

30 = 54 + 2x

2x = -24

x = -12

2x + 5 = 2*(x + 1) + 11

2x + 5 = 2x + 2 + 11

2x + 5 = 2x + 13

5 = 13

x∈∅

решений нет

Answer 2

It seems like you've provided a set of equations. I'll go through each of them and solve for the variables.

1. $2x + 1 = 1 - x$ First, let's simplify and solve for $x$: $2x + 1 = 1 - x$ Add $x$ to both sides: $2x + x + 1 = 1$ Combine like terms: $3x + 1 = 1$ Subtract 1 from both sides: $3x = 0$ Divide by 3: $x = 0$

2. $0.8a + 14 = 2 - 1.6a$ Let's simplify and solve for $a$: $0.8a + 14 = 2 - 1.6a$ Add $1.6a$ to both sides: $0.8a + 1.6a + 14 = 2$ Combine like terms: $2.4a + 14 = 2$ Subtract 14 from both sides: $2.4a = -12$ Divide by 2.4: $a = -12 / 2.4 = -5$

3. $12 - (4x - 18) = (36 + 4x) + (18 - 6x)$ Let's simplify and solve for $x$: $12 - (4x - 18) = (36 + 4x) + (18 - 6x)$ First, distribute the negative sign on the left side: $12 - 4x + 18 = 36 + 4x + 18 - 6x$ Combine like terms: $30 - 4x = 54 - 2x$ Add $2x$ to both sides: $30 - 4x + 2x = 54$ Combine like terms: $30 - 2x = 54$ Subtract 30 from both sides: $-2x = 54 - 30$ $-2x = 24$ Divide by -2: $x = -12$

4. $2x + 5 = 2(x + 1) + 11$ Let's simplify and solve for $x$: $2x + 5 = 2(x + 1) + 11$ Distribute the 2 on the right side: $2x + 5 = 2x + 2 + 11$ Combine like terms on the right side: $2x + 5 = 2x + 13$

   Now, notice that the $2x$ terms cancel out when we subtract $2x$ from both sides:

   $5 = 13$

   This equation is not possible; there is no solution to this equation. It implies that there are no values of $x$ that satisfy this equation.

So, three of the equations have solutions:

1. $x = 0$
2. $a = -5$
3. $x = -12$

The fourth equation, $2x + 5 = 2(x + 1) + 11$, has no solution.