lilknowah
lilknowah lilknowah
  • 25-10-2016
  • Mathematics
contestada

Solve the equation 5(a – 7) + 11 = 2a – 3(a + 4) for a

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siallen
siallen siallen
  • 25-10-2016
The answer is a equals 6.
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Аноним Аноним
  • 25-10-2016

5(a – 7) + 11 = 2a – 3(a + 4)

5a - 35 + 11 = 2a - 3a - 12

5a - 24 = -a - 12

add a to both sides

5a - 24 + a = -a -12 + a

simplify

6a - 24 = -12

add 24 to both sides

6a - 24 + 24 = -12 + 24

simplify

6a = 12

divide both sides by 6

6a/6 = 12/6

simplify

a = 2

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