Respuesta :

Answer:

1 -15

2 -9

Step-by-step explanation:

First Question

6(1+n) =8n- 3 (n-7)

6+6n=8n-3n+21

6+6n=5n+21

 -5n  -5n

6-1n=21

-6     -6

-1n=15

n=-15

Second Question

-7 (4x+7)= 3+ 4(-4-6x)

-28x-49=3-16-24x

-28x-49=-13-24x

+24x           +24x

-4x-49=-13

   +49    +49

-4x=36

x=-9

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