**The Program in C to Solve a 3 Variable Linear Equation** **is given belo**w:

```
#include <stdio.h>
int main() {
float a, b, c, d, e, f;
float x, y, z;
printf("Enter the coefficients of the 3 variables in the equation ax + by + cz = d :\n");
scanf("%f %f %f %f %f %f", &a, &b, &c, &d, &e, &f);
z = (d*e - b*f) / (a*e - b*c);
y = (d - c*z) / b;
x = (f - e*z) / a;
printf("x = %f, y = %f, z = %f\n", x, y, z);
return 0;
}
```

## Output:

Enter the coefficients of the 3 variables in the equation ax + by + cz = d :

a 45

66

89

5

56

22

x = 0.054038, y = -0.395448, z = 0.349434

## Pro-Tips**💡**

It will take three variable coefficients and constants as input and it will give the value of x, y and z as output.

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