Verified Answer :

mickey17surfer
  1. a number is represented by "x" 

    3x + 12 - 5x = 22 
    12 - 2x = 22 
    -2x = 10 
    x = -5 


    2. (45) + (45) + (45 + 6x) = 303 
    job 1, 2, 3 equals total for the day 

    135 + 6x = 303 
    6x = 168 
    x = 28 

    the plumbers hourly rate is $28/hr
dasetka

Three times (3 ·) a number (x) plus (+) 12 minus (-) 5 times (·) the same number (x) is (=) 22

3x + 12 - 5x = 22   Combine like terms (3x and -5x)
      -2x + 12 = 22   Subtract 12 from both sides
              -2x = 10   Divide both sides by -2
                 x = -5

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