Question

Determina la raiz para la ecuación

3x+2=7
3-2x=5x-9
2(x-1)=3(x+2)-5(x+3)
3(2x+5)-2(4+4x)=7

Answer 1

Respuesta:

1) x = 5/3

2) x = 12/7

3) x = -7/4

4) x = 0

Explicación paso a paso:

1) 3x + 2 = 7

3x = 7 - 2

3x = 5

x = 5/3

2) 3 - 2x = 5x - 9

-2x - 5x = -9 - 3

-7x = -12

x = -12/-7

x = 12/7

3) 2(x - 1) = 3(x + 2) - 5(x + 3)

2x - 2 = 3x + 6 - 5x - 15

2x - 2 = -2x - 9

2x + 2x = -9 + 2

4x = -7

x = -7/4

4) 3(2x + 5) - 2(4 + 4x) = 7

6x + 15 - 8 - 8x = 7

-2x + 7 = 7

-2x = 7 - 7

-2x = 0

x = 0/-2

x = 0