twheeler0808 twheeler0808
  • 14-11-2019
  • Mathematics
contestada

What is the result of subtracting 2x-5y=-1 from 2x+7y=-8

Respuesta :

WaywardDelaney WaywardDelaney
  • 17-11-2019

Answer:

The result of subtracting the equation is 12 y + 7 = 0

Step-by-step explanation:

Given equation as :

2 x - 5 y + 1 = 0       and

2 x + 7 y + 8 = 0

Now Subtract the given equation

( 2 x - 5 y + 1 ) - ( 2 x + 7 y + 8 ) = 0

Or, ( 2 x - 2 x ) - ( 5 y + 7 y ) + ( 1 - 8 ) = 0

Or,  ( 0 ) - ( 12 y ) + ( - 7 ) = 0

Or,  12 y = - 7

∴         y = - [tex]\frac{7}{12}[/tex]

Hence The result of subtracting the equation is 12 y + 7 = 0    Answer

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