Solve {l}{-2a-2b-c-d=-3}{2d-c+4b-2a=0}{d+c-b-a=0}{-a+2b+c-2d=6}

\left\{ \begin{array} { l } { - 2 a - 2 b - c - d = - 3 } \\ { 2 d - c + 4 b - 2 a = 0 } \\ { d + c - b - a = 0 } \\ { - a + 2 b + c - 2 d = 6 } \end{array} \right.

Solve for a, b, c, d

a=0

b=1

c=2

d=-1

Quiz

\left\{ \begin{array} { l } { - 2 a - 2 b - c - d = - 3 } \\ { 2 d - c + 4 b - 2 a = 0 } \\ { d + c - b - a = 0 } \\ { - a + 2 b + c - 2 d = 6 } \end{array} \right.

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