A ) 1 / 2 - ( 2 / 3 × 1 / 5 ) + 7 / 30B ) [ 4 + ( 3 / 7 ÷ 9 / 21 ) - 1 / 5 ] ÷ 1 / 2C ) 3 / 5 + 1 / 4 - ( 5 / 7 ÷ 25 / 7 )D ) 6 / 7 ÷ ( 4 / 3 - 1 / 2 )E ) [ ( 11 / 2 - 7 / 2 ) × 4 / 7 ] - ( 11 / 42 )F?
A ) 1 / 2 - ( 2 / 3 × 1 / 5 ) + 7 / 30 B ) [ 4 + ( 3 / 7 ÷ 9 / 21 ) - 1 / 5 ] ÷ 1 / 2 C ) 3 / 5 + 1 / 4 - ( 5 / 7 ÷ 25 / 7 ) D ) 6 / 7 ÷ ( 4 / 3 - 1 / 2 ) E ) [ ( 11 / 2 - 7 / 2 ) × 4 / 7 ] - ( 11 / 42 ) F ) ( 9 / 2 + 8 / 13 ) × 26 / 5.