`7^( 8.9)div(343)^(1.7)xx(49)^(4.8)=7^(?)`

(49)^(2)xx (7)^(8)div (343)^(3)=(7)^(?)

(49)^(2) xx (7)^(8) div (343)^(3) = (7)^(?)

(5)/(6)div(6)/(7)xx?-(8)/(9)div1(3)/(5)+(3)/(4)xx3(1)/(3)=2(7)/(9)

(2)/(7)div(4)/(5)xx(7)/(9)xx9div5=?

The value of (5 (1)/(9) - 7 (7)/(8)div9 (9)/(20)) xx (9)/(11)- (5(1)/(4) div (3)/(7) " of " (1)/(4) xx (2)/(7)) div 4 (2)/(3) + 1 (3)/(4) is (a) 2(1)/(4) (b) 2(1)/(3) (c) 3(1)/(4) (d) 4(1)/(2)

(4)/(7) " of " (8)/(9) div (8)/(7) xx 180 " of " (1)/(9)= ?