Simplify: (a) `((6+6+6+6)-:6)/(4+4+4+4+4)` (b) `((2+3)xx5+3-:1/2)/(6+5xx4-:4/5)`

Simplify : 2(3)/(4)-1(5)/(6)

Simplify: (-4(5)/(6))+(-7(3)/(4))

Simplify 2 1/2 xx 4 3/6 xx 1

Simplify: (3.6+6.4) (3.6-6.4) - (3.6-6.4)^(2) = ?

Simplify : 8.7 -[ 7.6 -{6.5 - (5.4 -4.3 -2)}]

Simplify (-4.6) xx (-4.6)+(-4.6+0.6)

Simplify [(7/(-8))+((-5)/6)]xx3/4=

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)

Simplify: 4""5/6-2""2/3

Simplify the following (a) (4)^2xx(-6)^3 (c) (-6)^2/4^3xx5^3xx2^5