Can you help me step by step

n = -7

Step-by-step explanation:

n - 7/4 = 35/12 + 5/3n

subtract n from both sides of the equation:

-7/4 = 35/12 + 2/3n

convert -7/4 to -21/12:

-21/12 = 35/12 + 2/3n

add 21/12 to both sides:

0 = 56/12 + 2/3n

convert 2/3n to 8/12n:

0 = 56/12 + 8/12n

subtract 56/12 from each side:

8/12n = -56/12

multiply both side by 12:

8n = -56

divide both sides by 8:

n = -7

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.