SOLUTION: it tell you to use the substitution method to solve the linear system x +2y = - 5 4x-3y=2 3x-2y=4 x+3y=5 3x+y= -2 x+3y=2

Algebra ->  Linear-equations -> SOLUTION: it tell you to use the substitution method to solve the linear system x +2y = - 5 4x-3y=2 3x-2y=4 x+3y=5 3x+y= -2 x+3y=2      Log On


   

Question 41609: it tell you to use the substitution method to solve the linear system
x +2y = - 5
4x-3y=2

3x-2y=4
x+3y=5

3x+y= -2
x+3y=2
Answer by K N Swamy(1) About Me  (Show Source):
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q1.
x+2y=-5----(1)
4x-3y=2---(2)
from (1), X=-2Y-5
substitute x=-2y-5 in (2)
4(-2y-5)-3y=2
-8y-20-3y=2
-11y-20=2
-11y=-22
y=-22/-11
y=2
x=-2y-5
substitute y=2
x=-2(2)-5
x=-4-5
x=-9
Hence x=-9 and y=2