anonymous
  • anonymous
What is the value of a?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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welshfella
  • welshfella
first distribute 5 over the parentheses what do you get?
anonymous
  • anonymous
5a and 20

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welshfella
  • welshfella
no it is - 20 so we have 5a - 20 - 8a = 55 now combine the terms in a what is 5a - 8a ?
anonymous
  • anonymous
13a?
welshfella
  • welshfella
no 13a is 5a + 8a 8a is greater than 5a so the answer is negative 5a - 8a = ?
anonymous
  • anonymous
3a
welshfella
  • welshfella
|dw:1442857410934:dw|
welshfella
  • welshfella
|dw:1442857485090:dw|
welshfella
  • welshfella
no -3a - check the graph above
anonymous
  • anonymous
ok.
welshfella
  • welshfella
so we have -3a - 20 -= 55 now add 20 to both sides -3a - 20 + 20 = 55 + 20 the 20's cancel out -3a = 75 divide both sides by -3:- a = 75 / -3
welshfella
  • welshfella
so what is 75 divided by -3 ?
anonymous
  • anonymous
-25
welshfella
  • welshfella
yes
anonymous
  • anonymous
is that the answer?
welshfella
  • welshfella
yes that is the value of a read over the solution and try and practice similar problems

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