( 71) + (+9) = ( 81) + ( 9) 71 + 9 = 81 9 62 = 90 Clearly 62 lt;90 Hence, ( 71) + (+9) lt; ( 81) + ( 9) . ...

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Ordering Integers

-71 + +9 -8...

Question

$(- 71) + (+ 9)$ ______ $(- 81) + (- 9)$ .

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Solution

$(- 71) + (+ 9) = (- 81) + (- 9)$
$- 71 + 9 = - 81 - 9$
$- 62 = 90$ Clearly $- 62 < 90$
Hence, $(- 71) + (+ 9) < (- 81) + (- 9)$ .

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