# Gaussian elimination of a system ?

b(x,4,z) + c(-2,4,2)+d(-3,4,3)+(0,-981,0)=0 is a system of three linear equations, where the unknowns are b, c and d (assume x and z are known). Use Gauss's elimination to find b, it will be a function of x and z.

Any help would be appreciated. Thanks.

### 1 Answer

Relevance

- Anonymous8 years ago
x 4 z | 0 b

-2 4 2 | -981 c

-3 4 3 | 0 d

(3c/2)-d

x 4 z | 0 b

0 2 0 | -1471.5 c

-3 4 3 | 0 d

b - 2c

x 0 z | 2943 b

0 2 0 | -1471.5 c

-3 4 3 | 0 d

(x + z) b = 2943

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