Answer:
[tex]\boxed{\boxed{\sf x=-150}}[/tex]
Step-by-step explanation:
[tex]\sf 141-x=291[/tex]
Subtract 141 from both sides:
[tex]\sf 141-x-141=291-141[/tex]
[tex]\sf -x=150[/tex]
Divide both sides by -1:
[tex]\sf \cfrac{-x}{-1}=\cfrac{150}{-1}[/tex]
[tex]\sf x=-150[/tex]
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