Why does |a + b| not equal to |a| + |b|?
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Originally Posted by harpazo Why does |a + b| not equal to |a| + |b|? Let $a=-5~\&~b=4$, now answer your own question,
| a + b| |-5 + 4| |-1| = 1 |-5| + |4| 5 + 4 = 9 1 DOES NOT EQUAL 9. Two very different expressions.