Question

4х-2(Х+7)=2(3-х) 04(х-9)=0,7+0,3(Х+2) -3(3в+1)-12=12 -3Х-2=6+4х 2Х+6+4х-2

Answer 1

Ответ:х=5; х=49; b=-3; x=-8/7; 2(3x+2)

Пошаговое объяснение:

4x-2x-14=6-3x

4x-14=6

4x=6+14

4c=20

0,4c'3,6=0,7+0,3x+0,6

0,4x-3,6=1,3+0,3x

0,4c-0,3c=1,3+3,6

0 +c=4,9

-9b-3-12=12

-9b-15=12

-9b=12+15

-9b=27

-3x-4x=6+2

-7x=8

6x+4

Answer 2

Let's solve these equations step by step:

1. $4x - 2(x + 7) = 2(3 - x)$ Expand and simplify both sides: $4x - 2x - 14 = 6 - 2x$ Combine like terms: $2x - 14 = 6 - 2x$ Add $2x$ to both sides: $4x - 14 = 6$ Add 14 to both sides: $4x = 20$ Divide by 4: $x = 5$

2. $4(x - 9) = 0.7 + 0.3(x + 2)$ Expand and simplify both sides: $4x - 36 = 0.7 + 0.3x + 0.6$ Combine like terms: $4x - 36 = 1 + 0.3x$ Subtract $0.3x$ from both sides: $3.7x - 36 = 1$ Add 36 to both sides: $3.7x = 37$ Divide by 3.7: $x = 10$

3. $-3(3v + 1) - 12 = 12$ Distribute the -3 on the left side: $-9v - 3 - 12 = 12$ Combine constants: $-9v - 15 = 12$ Add 15 to both sides: $-9v = 27$ Divide by -9: $v = -3$

4. $-3x - 2 = 6 + 4x$ Add $3x$ to both sides: $-2 = 3x + 4x$ Combine like terms: $-2 = 7x$ Divide by 7: $x = -\frac{2}{7}$

5. $2x + 6 + 4x - 2$ Combine like terms: $6x + 4$

So, the solutions for each equation are:

1. $x = 5$
2. $x = 10$
3. $v = -3$
4. $x = -\frac{2}{7}$
5. $6x + 4$