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Solve for y, x, z, a
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-2=2x+3
Consider the first equation. Insert the known values of variables into the equation.
2x+3=-2
Swap sides so that all variable terms are on the left hand side.
2x=-2-3
Subtract 3 from both sides.
2x=-5
Subtract 3 from -2 to get -5.
x=-\frac{5}{2}
Divide both sides by 2.
z=-\frac{5}{2}+7
Consider the third equation. Insert the known values of variables into the equation.
z=\frac{9}{2}
Add -\frac{5}{2} and 7 to get \frac{9}{2}.
a=\frac{9}{2}
Consider the fourth equation. Insert the known values of variables into the equation.
y=-2 x=-\frac{5}{2} z=\frac{9}{2} a=\frac{9}{2}
The system is now solved.