(7²-51)³×5/9+3,6:9²
Ответ:
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(49-51)³×5/9+18/5×1/9²
(-2)³×5/9+18/5×1/81
-2³×5/9+2/5×1/9
-8×5/9+2/45
-40/9+2/45
-22/5 - Ответ