Question

Solve the system of equations.
−5x+8y=0
-7x-8y=-96

Answer 1

`\huge{ \mathrm{ \underline{Answer :}}}`

The given equations are : -

−5x + 8y = 0 - [1]

-7x - 8y = -96 -[2]

Add the equations :

• 
  `\mathrm{- 5x + 8y + (- 7x - 8y) = 0 + (- 96)}`

• 
  `\mathrm{- 5x + 8y - 7x - 8y = - 96}`

• 
  `- 12x = - 96`

• 
  `x = 8`

_____________________________

plugging value of x in [1] :

• 
  `- 5x + 8y = 0`

• 
  `( - 5 * 8) + 8y = 0`

• 
  `- 40 + 8y = 0`

• 
  `8y = 40`

• 
  `y = 5`

_____________________________

`\mathrm{ \#TeeNForeveR}`

Answer 2

-5x+8y-7x-8y=-96

-12x =-96

X= 8

if X=8,

(-5×8)+8y=0

8y=40

y=5

x=8

y=5