What is 2x plus 21 divided by 2 equals x plus 7?

-3.5

Step-by-step explanation:

2x+21/2=x+7

2x + 10.5 = x + 7

-x               -x

x + 10.5 = 7

      -10.5   -10.5

x = -3.5

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

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