Evaluate:
−1−49-1 - \dfrac{4}{9}−1−94
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−1−49=−11−49-1 - \dfrac{4}{9} \\[1em] =\dfrac{-1}{1} - \dfrac{4}{9} \\[1em]−1−94=1−1−94
LCM of 1 and 9 is 3 x 3 = 9
−1×91×9−4×19×1=−99−49=−9−49=−139=−149\dfrac{-1 \times 9}{1 \times 9} - \dfrac{4 \times 1}{9 \times 1}\\[1em] = \dfrac{-9}{9} - \dfrac{4}{9}\\[1em] = \dfrac{-9 - 4}{9}\\[1em] = \dfrac{-13}{9}\\[1em] = -1\dfrac{4}{9}1×9−1×9−9×14×1=9−9−94=9−9−4=9−13=−194
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