7.`{(4times5)^(-2)-:((1)/(10))^(2)}+(3)/(4)` ,Simplify:

Simplify ( i ) (((1)/(3))^(-2)-((1)/(2))^(-3)}-:((1)/(4))^(-2)*( ii) ((5)/(8))^(-7)xx((8)/(5))^(-5)

((-4)/(3))times(1)/(2)+((-4)/(3))times((-7)/(5))

Simplify : [ ((- 3 )/( 2) xx (4)/(5) ) + ((9)/(5) xx (-10)/( 3)) - ((1)/(2)xx (3)/(4)) ] div [ ((21)/( 9) xx (3)/(7)) +((7)/(8) xx (16)/(14)) ]

Simplify (i) {(1/3)^(-2) - (1/2)^(-3)} -: (1/4)^(-2). (ii) (5/8)^(-7) xx (8/5)^(-5).

Simplify : (((2)/(3)xx (-(5)/(4)))+((-(10)/(3)) xx (5)/(2))-(((-16)/(3))xx(-(55)/(32))))/((3)/(2)xx((-(9)/(14))xx(-(1)/(7))))

Simplify and express the result in power notation with positive exponent.(i) (-4)^(5)-:(-4)^(8)( ii) ((1)/(2^(3)))^(2) (iii) (-3)^(4)xx((5)/(3))^(4)( iv) (3^(-7)-:3^(-10))xx3^(-5)(v)2^(-3)xx(-7)^(-3)

Simplify (3^(-5)times5^(-7)times(-2)^(3))/(3^(4)times5^(-2)times(-2)^(-3))

Simplify: (a) 108-:36 of (1)/(4)+(2)/(5)xx3(1)/(4) (b) (2)/(3)xx(5)/(6)+(4)/(9)-(3)/(4)+(2)/(9)xx(5)/(9)-:(2)/(9)