Solve for x
x=-200
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0x\times 9-x=200
Multiply 12 and 0 to get 0.
0x-x=200
Multiply 0 and 9 to get 0.
0-x=200
Anything times zero gives zero.
-x=200
Anything plus zero gives itself.
x=-200
Multiply both sides by -1.
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Matrix
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Limits
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