Find the solution set for the system of equations.

9x + 5y = 28

5x + 9y = 56

Question

kathereziKriscotlo kathereziKriscotlo

26-04-2016
Mathematics

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Find the solution set for the system of equations.

9x + 5y = 28

5x + 9y = 56

Respuesta :

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Panoyin Panoyin · Answer 1 · 2016-04-29T00:59:42+02:00

9x + 5y = 28 ⇒ 81x + 45y = 252
5x + 9y = 56 ⇒ 25x + 45y = 280
56x = -28
56 56
x = ⁻¹/₂
9x + 5y = 28
9(⁻¹/₂) + 5y = 28
4¹/₂ + 5y = 28
- 4¹/₂ - 4¹/₂
5y = 23¹/₂
5 5
y = 4⁷/₁₀
(x, y) = 4¹/₂, 4⁷/₁₀)

Find the solution set for the system of equations. 9x + 5y = 28 5x + 9y = 56

Respuesta :

Otras preguntas

Find the solution set for the system of equations.

9x + 5y = 28

5x + 9y = 56