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$\left(35423 + 7164 + 41720\right)$ - $\left(317 \times 89\right)$ = ?

28213
84307
50694
56094
Explanation:

  35423

+ 7164

+ 41720

  ---------

  84307

- 28213

  ---------

  56094

  ---------

317 x 89 = 317 x $\left(90 -1\right )$

=$ \left(317 \times 90 - 317\right)$

= $\left(28530 - 317\right)$

= 28213

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