cookiecreamy456 cookiecreamy456
  • 16-05-2021
  • Mathematics
contestada

Solve using elimination.

-9x + 2y = 5
9x − 4y = -19

Respuesta :

niyh1111
niyh1111 niyh1111
  • 16-05-2021

hi hruStep-by-step explanation:

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maya136
maya136 maya136
  • 16-05-2021
-9 + 2y = 5
9x - 4y = -19

Add these equations to eliminate x:
-2y = -14

Then solve -2y = -14 for y:
-2y = -14
-2 -2
(Divide both sides by -2)

y=7

Substitute 7 for y in -9x + 2y = 5:
-9x + (2)(7) = 5
-9x + 14 = 5
-14 -14
(Subtract 14 from both sides)
-9x = -9
-9 -9
(Divide both sides by -9)
x = 1

(1,7)
Mark me Brainlest pls
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