How to find the values of c and d in the following equations:

c+2d=6

-3c-6d=-18

Thanks, Lucky

How to find the values of c and d in the following equations:

c+2d=6

-3c-6d=-18

Thanks, Lucky

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Miami, FL

c+2d=6

-3c-6d=-18

-3c-6d=-18

to eliminate one variable we can multiply times 3 the first equation and add to the second equation

3c+6d = 18

-3c - 3d=-18

The two equations are the same thing and the system is undetermined.

The determinant of the system is Zero so the system is undetermined. This is a so called inconsistent system.

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