Solve for x
x=11000
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50000=8000+18000+35000-x
Add 42000 and 8000 to get 50000.
50000=26000+35000-x
Add 8000 and 18000 to get 26000.
50000=61000-x
Add 26000 and 35000 to get 61000.
61000-x=50000
Swap sides so that all variable terms are on the left hand side.
-x=50000-61000
Subtract 61000 from both sides.
-x=-11000
Subtract 61000 from 50000 to get -11000.
x=11000
Multiply both sides by -1.
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