Solve for y, z, a

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-3y=-4-3
Consider the first equation. Subtract 3 from both sides.
-3y=-7
Subtract 3 from -4 to get -7.
y=\frac{-7}{-3}
Divide both sides by -3.
y=\frac{7}{3}
Fraction \frac{-7}{-3} can be simplified to \frac{7}{3} by removing the negative sign from both the numerator and the denominator.
z=-2\times \left(\frac{7}{3}\right)
Consider the second equation. Insert the known values of variables into the equation.
z=-\frac{14}{3}
Multiply -2 and \frac{7}{3} to get -\frac{14}{3}.
a=-\frac{14}{3}
Consider the third equation. Insert the known values of variables into the equation.
y=\frac{7}{3} z=-\frac{14}{3} a=-\frac{14}{3}
The system is now solved.