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  • The product of 7 and a number, increased by 3, is equal to twice the number, subtracted from 39. Find the number.
  • Mary can you please help me in my math homework, it's the last problem and I don't understand it 
  • First you have to write the multi step equation
  • Correct
  • That would be   7a + 3 = 2a - 39?
  • First you have to pass the variables to the left side, and if it positive it'll change signs
  • So it would be   5a + 3 = -39
  • Then you pass the 3 to the right and it becomes negative -3
  • Then were at     5a = -42
  • So now what do we do?
  • We isolate the variable?
  • So -42 divided by 5 is 8.4. (a= 8.4)
  • Thanks a lot Mary, let's buy some candy
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