bnc103
bnc103 bnc103
  • 14-01-2020
  • Mathematics
contestada

(3a-1)/8=(a+9)/4 find a plz

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 14-01-2020

Answer:

  a = 19

Step-by-step explanation:

  3a -1 = 2(a+9) . . . . . multiply by 8

  3a -1 = 2a +18 . . . . . eliminate parentheses

  a -1 = 18 . . . . . . . . . . subtract 2a

  a = 19 . . . . . . . . . . . . add 1

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