whalesrawesome whalesrawesome

21-02-2018
Mathematics

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5x−4y=−10
−4x+5y=8
Solve System of equations

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aliford523 aliford523

21-02-2018

5y = 4x + 8 and y = 4x/5 + 8/5

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Banabanana Banabanana

21-02-2018

{5x−4y=−10 ⇒ 5x = 4y-10 ⇒ x=(4y-10)/5 ⇒ x = 0.8y - 2
{-4x+5y=8

-4(0.8y-2) + 5y = 8
-3.2y + 8 + 5y = 8
1.8y = 8 - 8
1.8y = 0
y = 0

5x−4·0=−10
5x = -10
x = -10/5
x = -2

Your answer is (-2, 0)

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