Solve for z, a, b
b=-6
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z=-21+15
Consider the first equation. Add 15 to both sides.
z=-6
Add -21 and 15 to get -6.
a=-6
Consider the second equation. Insert the known values of variables into the equation.
b=-6
Consider the third equation. Insert the known values of variables into the equation.
z=-6 a=-6 b=-6
The system is now solved.
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