= 1/6x(3/8-3/8)

= 1/6x0

=0

2.4/7 ×5/9+3/7 × 5/9

=(4/7+3/7)x5/9

= 1x5/9

=5/9

Three. 5/2 -( 3/2+4/5)

=5/2-3/2-4/5

= 1-4/5

= 1/5

Four. 6 ×( 1/2+2/3)

=6x 1/2+6x2/3

=3+4

=7

Verb (abbreviation of verb) 8 × 4/5+8 × 1 1/5

=8x(4/5+ 1 1/5)

=8x3

=24