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Question In each of the sets of expressions below, identify those that have the same value. Do not evaluate them, but rather use your understanding of terms.
(a) 319 + 537, 319 – 537, -537 + 319, 537 – 319
(b) 87 + 46 – 109, 87 + 46 – 109, 87 + 46 – 109, 87 – 46 + 109, 87 – (46 + 109), (87 – 46) + 109
(a) Expressions having the same terms have the same value. Therefore, 319 – 537 and -537 + 319 have the same value. (b) Expressions having the same terms have equal values. Therefore, 87 + 46 – 109, 87 + 46 – 109, 87 + 46 – 109 have the same value. Also, 87 – 46 + 109 and (87 – 46) + 109 have the same value.