x+y+z=1,2x+2y+3z=6,x+4y+9z=3,solve the system of equations by using matrix inversion method
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Given : x + y + z = 1
2x + 2y + 3z = 6
x + 4y + 9z = 3
To Find : Value of x , y & z
Solution:
x + y + z = 1 Eq1
2x + 2y + 3z = 6 Eq2
x + 4y + 9z = 3 Eq3
Eq 2 - 2 * Eq1
=> z = 4
=> x + y = - 3
x + 4y + 9(4) = 3
=> x + 4y = -33
=> 3y = -30
=> y = - 10
=> x = 7
x = 7
y = -10
z = 4
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