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Does (3-x)/(3-x) equal 1 for all values of x?

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No. The algebraic fraction (3-x)/(3-x) equals 1 when x ≠ 3. For every number on the number line except x = 3, the fraction equals 1.

When x = 3, the fraction is 0/0, indeterminate, and cannot be said to equal any particular number on the number line.

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