4x+3y-4=0;6x=8-5y slove by Cramer's rule
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StarTbia
StarTbia
26.06.2018
Math
Secondary School
+5 pts
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4x+3y-4=0 ; 6x=8-5y Solve this equations by Cramer’s method.
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abhi178
abhi178
Given, 4x + 3y - 4 = 0 -------(1)
6x = 8 - 5y
6x + 5y - 8 = 0 -------(2)
use Cramer's rule ,
4x + 3y - 4 = 0
6x + 5y - 8 = 0
for equations ,
\frac{x}{3\times-8-(-4)\times5}=\frac{-y}{4\times - 8-(-4)\times6}=\frac{1}{4\times5-3\times6}
=> x/(-24 + 20) = -y/(-32+ 24) = 1/(20 - 18)
=> x/-4 = -y/-8= 1/2
=> x/-4 = y/8 = 1/2
=> x = -4/2 = -2 and y = 8/2 = 4
hence, x = -2 and y = 4
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