How to solve for these

9514 1404 393

  1.  f = 9/a +7

  2.  x = (y -5)/3

  3.  x = 3/(y +2)

  4.  l = (P +9)/4

Step-by-step explanation:

I find it convenient to use the fact that a=b/c can be rewritten as c=b/a:

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1. f - 7 = 9/a . . . . use the above shortcut

  f = 9/a +7 . . . . add 7

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2. y -5 = 3x . . . . . subtract 5

  x = (y -5)/3 . . . . divide by 3

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3. y +2 = 3/x . . . . add 2

  x = 3/(y +2) . . . . use the above shortcut

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4. P +9 = 4l . . . . add 9

  l = (P +9)/4 . . . divide by 4

step-by-step explanation:

try remembering the steps