CodeRed1 CodeRed1
  • 09-09-2016
  • Mathematics
contestada

Solve for y
4.2x - 1.4y = 2.1

Respuesta :

dalendrk
dalendrk dalendrk
  • 09-09-2016
4.2x - 1.4y = 2.1    |multiply both sides by 10

42x - 14y = 21    |subtract 42x from both sides

-14y = 21 - 42x    |change signs

14y = 42x - 21    |divide both sides by 14

y = 3x - 1.5
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