zaccattack75 zaccattack75

15-06-2017
Mathematics

contestada

Solve using method of your choice. PLease help 28 points
7x+y=-20
x-3y=-50

Solve for x.
(5x-8y)^2=-25

Respuesta :

konrad509 konrad509

15-06-2017

[tex]7x+y=-20\\ x-3y=-50\\\\ 21x+3y=-60\\ \underline{x-3y=-50}\\ 22x=-110\\ x=-5\\\\ -5-3y=-50\\ 3y=45\\ y=15 [/tex]

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[tex] (5x-8y)^2=-25 [/tex]
No solution in real numbers.

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