6 is the constant in that equation. The answer is 6 because it is the only number that is not attached to a variable.
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<u><em>Perimeter=L+W×2</em></u>
<u><em>Perimeter=150+50×2</em></u>
<u><em>Perimeter=200×2</em></u>
<u><em>Perimeter=400</em></u>
First, combine the like terms:
-x+8=3
Then, isolate x:
-x=-5
Then, divide by -1:
x=5
Try writing and solving an equation of proportions:
4 5
---- = ----
6 x
Then 4x = 30, and x = 7.5 (answer)
