Question

Ma ayudan con los 5 ejercicios del archivo, doy 30 puntos y corona
2(x + 1) = x + 5
3(x-1)=2(x+1)
3(x-1)+2(x+1)=4(x+1)
3(x-1)+2x=2(x+1)+4
2(x+1)+4(x-1)=3(x+2)+1

Answer 1

Respuesta:

Explicación paso a paso:

2(x + 1) = x + 5

2x +2 = x +5

2x -x = 5 -2

x = 3

3(x-1)=2(x+1)

3x -3 = 2x +2

3x -2x = 2 +3

x = 5

3(x-1)+2(x+1)=4(x+1)

3x -3 +2x +2 = 4x +4

3x +2x -4x = 4 +3 -2

x = 5

3(x-1)+2x=2(x+1)+4

3x -3 +2x = 2x +2 +4

3x +2x -2x = 2 +4 +3

3x = 9

x = 3

2(x+1)+4(x-1)=3(x+2)+1

2x +2 +4x -4 = 3x +6 +1

2x +4x -3x = +6 +1 -2 +4

3x = 9

x = 3

Answer 2

a) 2(x + 1) = x + 5

2x + 2 = x + 5

2x - x = -2 + 5

x = 3

b) 3 ( x - 1 ) = 2 ( x + 1 )

3x - 3  = 2x + 2

3x -2x = 3 + 2

x = 5

c) 3 ( x - 1 ) + 2 ( x + 1 ) = 4 ( x + 1 )

3x - 3 + 2x + 2 = 4x + 4

3 x + 2x - 4x = 3 - 2 + 4

5x - 4x = 1 + 4

x = 5

d) 3 ( x - 1 ) + 2 x = 2 ( x + 1 ) + 4

3x - 3 + 2 x = 2x + 2 + 4

3x + 2x - 2x = 3 + 2 + 4

3x = 9

x = 9/3

x = 3

e) 2 ( x + 1 ) + 4 ( x - 1 ) = 3 ( x + 2 ) + 1

2x + 2 + 4x - 4 = 3x + 6 + 1

2x + 4x - 3x = -2 + 4 + 6 + 1

6x - 3x = -2 + 11

3x = 9

x = 9/3

x  = 3