Respuesta :

= 2(x-3) + 2(7x+1)

since there are 4 sides, 2 which have the same dimensions

= 2x - 6 + 14x + 1

=  16x - 5

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Step-by-step explanation:

perimeter of rectangle = 2( l+w)

=2(7x+1+x-3)

=2(8x-2)

=16x-4

4 = 16x

4/16=x

1/4=x

answer is 16x-4

but you can write the value of x also