- 22/7 *( 22/7 - 4/3)* 7/22 ÷(- 22/21 )
=- 22/7 * 7/22*( 22/7 - 4/3) ÷(- 22/21 )
=- ( 22/7 - 4/3) ÷(- 22/21 )
= ( 22/7 - 4/3) ÷( 22/21 )
= ( 22/7 - 4/3) *( 21/22 )
= 22/7 *( 21/22 )- (4/3)*( 21/22 )
=3- 14/11
=1又3/11
- 22/7 *( 22/7 - 4/3)* 7/22 ÷(- 22/21 )
=- 22/7 * 7/22*( 22/7 - 4/3) ÷(- 22/21 )
=- ( 22/7 - 4/3) ÷(- 22/21 )
= ( 22/7 - 4/3) ÷( 22/21 )
= ( 22/7 - 4/3) *( 21/22 )
= 22/7 *( 21/22 )- (4/3)*( 21/22 )
=3- 14/11
=1又3/11