Question

ayúdenme

a) 2(4x + 2) = 5(x + 3) + 4 =



b) 6b - ( b + 2 ) + ( -b + 3 ) = 15b - 10 =



c) -(5d + 6 ) + (-8 + 3 d) =
30d - (-d + 6 ) + (-5d + 4)


d) 30y + [-(3y + 2) - (y + 3) ] =
16y - [3y -(6 - 9y) ]​

Answer 1

Respuesta:

adjunto procedimiento y respuestas :)

Explicación paso a paso:

a) 2(4x + 2) = 5(x + 3) + 4

8x+4=5x+15+4

8x-5x=15+4-4

3x=15

x=15/3

x=5

b) 6b - ( b + 2 ) + ( -b + 3 ) = 15b - 10

6b-b-2-b+3=15b-10

6b-b-b-15b=2-3-10

-11b=-11

b= -11/-11

b= 1

c) -(5d + 6 ) + (-8 + 3 d) = 30d - (-d + 6 ) + (-5d + 4)

-5d-6-8+3d=30d+d-6-5d+4

-5d+3d-30d-d+5d=6+8-6+4

-28d=12

d=12/-28

d=0.43

d) 30y + [-(3y + 2) - (y + 3) ] =16y - [3y -(6 - 9y) ]

30y-3y-2-y-3=16y-(3y-6-9y)

30y-3y-2-y-3=16y+3y+6+9y

30y-3y-y-16y-3y-9y=2+3+6

-2y=11

y=11/ -2