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Simplify the expression 13 - (6 - 2) and the expression (13 - 6) - 2 to show that subtraction is not an associative operation.
Alzheimer's disease
A progressive neurodegenerative disorder characterized by cognitive decline, memory loss, and behavioral changes.
Crohn's disease
A chronic inflammatory condition of the gastrointestinal tract, which is part of a group of conditions known as inflammatory bowel disease (IBD).
Asperger's syndrome
A developmental disorder affecting the ability to effectively socialize and communicate, considered to be on the high-functioning end of the autism spectrum.
Arthritis
Inflammation of the joints.
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