Question

$a) - (2x + 4) + 6 = - 2 \\ b) - 3(2x - 3) + 1 = 16 \\ c)4(2x - 1) - 6 = 14$
$a)10x + 2 = - 13 \\ b) - 7x - 8 = 3x - 2 \\ c) - 1 + 2(3x - 1) = 1$
$a)0.3 = 1.2 \\ b)0.09x = - 0.27 \\ c - 0.25x = 0.75 \\ d) - 0.4x = 1.2$
me pueden ayudar
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Answer 1

Respuesta:

A. ) - (2x + 4) + 6 = - 2

-2x - 4+6=-2

-2x +2 =-2

-2x =-2-2

-2x = - 4 ; x=-4/-2=2

b) - 3(2x - 3) + 1 = 16

-6x+9+1=16

-6x+10=16

-6x=16-10

-6x=6; x=-6/6= 1

c)4(2x - 1) - 6 = 14

8x-4 - 6 =14

8x - 10 = 14

8x = 14+10

8x = 24 ; x = 24/8 ; x=3

a)10x + 2 = - 13

10x =-13-2

10x = - 15

X = - 15/10 ; x = 3/2

b) - 7x - 8 = 3x - 2

-7x-3x= - 2+8

-10x = 6 ; x=-6/10 ; x = - 3/5

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

-1 +6x-2 = 1

6x = 1+1+2

6x =4

X=4/6 ; x = 2/3

a)0.3x= 1.2

X=1.2/0.3 ; x = (12/10)/(3/10) = 120/30 = 4

b)0.09x = - 0.27 ; x = - 0.27/0.09

X= (-27/100)/(9/100)

X=-2700/900 = - 3

c - 0.25x = 0.75 ; x = 0.75/-0.25

X= (75/100)/(-25/100)

X=7500/-2500 = - 3

d) - 0.4x = 1.2 ; x = 1.2/-0.4

X = (12/10)/(-4/10)

X= 120/-40 = - 3