hola, por favor, necesito esto para hoy y no lo comprendo! gracias
Respuestas
Respuesta:
Explicación paso a paso:
a) x + 8x + 12 = x + 20 b) 4x + 5 - 7x = 6x + 12 - 1
9x + 12 = x + 20 5 - 3x = 6x + 11
8x = 8 5 - 11 = 6x + 3x
x = 1 - 6 = 9x ⇒
c) 3x + x + 5 = 2(10 + 2x) - 5x d)5( x + 3 ) = 4(x + 2 )
4x + 5 = 20 + 4x - 5x 5x + 15 = 4x + 8
9x = 25 + 4x x= - 7
5x = 25
x = 5
e) 7x + 4(2x - 15) = 3(2 - 5x) - 6 f) 2(x - 1) + 7x + 3 = 5(x + 1)
7x + 8x - 60 = 6 - 15x - 6 2x - 2 + 7x +3 = 5x + 5
15x - 60 = -15x 9x + 1 =5x + 5
30x = 60 4x = 4
x = 2 x = 1
g) 5(x - 1) + 6x = 4x + 9 h) x + 3(x - 8) = 3(x - 1)
5x - 5 + 6x = 4x + 9 x + 3x - 24 = 3x - 3
11x - 5 = 4x + 9 4x - 24 = 3x -3
7x = 14 4x - 3x = -3 + 24
x = 2 x = 21
i) 5x - 9 = 15 + 2(x + 3) j) 8x + 2(x - 1) - 11 = 5x + 3(x + 1)
5x - 9 = 15 + 2x + 6 8x + 2x - 2 - 11 = 5x + 3x + 3
3x = 30 2x = 16
x = 10 x = 8
k) 8x + 4 + 2( x - 5) = 9 (x - 2) + 8 l) 4x + 2(x - 1) = 4x + 3(x + 2) + 23
8x + 4 + 2x - 10 = 9x - 18 + 8 4x + 2x - 2 = 4x + 3x + 6 +23
10x - 6 = 9x - 10 6x - 2 = 7x +29
x = - 4 - 31 = x
m) n)
2x + 6 = 3x - 2 =
2x + 6 = 16 3x - 2 = 2
2x = 10 3x = 4
x = 5
o) 3 - 10 = 14 p) + 12 = 18
3 = 24 = 6
= 8 4x =
x = 4x = 36
x = 2 x = 9
espero te ayude me costo mucho trabajo hacerlos todos ;v