Question

数学的简便计算,求算式!（999×1/6+333×1/2-666×1/9）÷7/9-333

Answer 1

( 999 X 1/6 + 333 X 1/2 - 666 X 1/9 ) / 7/9 - 333

= 333 X ( 3/6 + 1/2 - 2/9 ) X 9/7 - 333

= 333 X ( 1 - 2/9 ) X 9/7 - 333

= 333 X ( 7/9 X 9/7 - 1 )

= 333 X ( 1 - 1 )

= 0