`(57)/(67)xx(32)/(171)xx(45)/(128)=?`

(14)/(19)xx(57)/(70)xx(20)/(21)=?

4xx(3)/(13)xx952-128(5)/(7)=?

Find the value of x if x=root(4)(((72*14)^(5)xx sqrt(45))/((2*8)^(3)xx sqrt(32)))

(-57)xx(-19)+57=

Simplify: ((15)/(28) xx (- 119)/(9)) + ((-19)/(20) xx (-30)/( - 57)) + ((- 39)/( 3) xx (14)/(5) xx (-12)/( 56))

4/7 xx ? =32/35

Find the unit digit of 13^(44)xx68^(57)xx24^(13)xx57^(68)+1234+5678

Multiply (43)_(8)xx(67)_(8)