Linear equation calculator 3 unknowns

Equation form: aX + bY + cZ = d

Equation 1) a= b= c= d=

Equation 2) a= b= c= d=

Equation 3) a= b= c= d=

X= Y= Z=

Equations are entered in this form: aX + bY + cZ = d

Example, when you want to find the three unkowns x y and z:

2X + 3Y + 4Z = 119

5X - 6Y + 7Z = 80

8X + 9Y + 10Z = 353

The result is X=12 Y=13 Z=14