Solve for x, y, z
z=7
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-18+x=-28+9
Consider the first equation. Multiply -3 and 6 to get -18.
-18+x=-19
Add -28 and 9 to get -19.
x=-19+18
Add 18 to both sides.
x=-1
Add -19 and 18 to get -1.
x=-1 y=7 z=7
The system is now solved.
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