Find the values of each of the following : `(1/2)^(-1)+\ (1/3)^(-1)+\ (1/4)^(-1)` `(1/2)^(-2)+\ (1/3)^(-2)+(1/4)^(-2)`

Find the values of each of the following : (2^(-1)x\ 4^(-1))-:2^2 (ii) (5^(-1)x\ 2^(-1))-:6^(-1)

Find the values of each of the following : (2^(-1)xx\ 4^(-1))-:2^2 (ii) (5^(-1)xx\ 2^(-1))-:6^(-1)

Find the values of each of th4e following : 3^(-1)+4^(-1) (ii) (3^0+4^(-1))x2^2 (3^(-1)+4^(-1)+5^(-1))^0 (iv) {(1/3)^(-1)-\ (1/4)^(-1)}^(-1)

Simplify each of the following : (i) [{((-1)/5)^(-2)}^2]^(-1)\ (ii) {(1/3)^(-2)-\ (1/2)^(-3)}-:(1/4)^(-2)

Simplify each of the following : [{((-1)/5)^(-2)}^2]^(-1)\ (ii) {(1/3)^(-2)-\ (1/2)^(-3)}-:(1/4)^(-2)

Find the values of each of th4e following : 3^(-1)+4^(-1) (ii) (3^0+4^(-1))xx2^2 (iii) (3^(-1)+4^(-1)+5^(-1))^0 (iv) {(1/3)^(-1)-\ (1/4)^(-1)}^(-1)

Find the value of (1/2)^(-1)+(1/3)^(-1)+(1/4)^(-2)

Find the value of x in the following: 1 2/3-:2/7xx x/7=1 1/4xx2/3-:1/6

Evaluate (1) 2^(-3) (2)(-4)^(-2) (3)1/3^(-2) (4)(1/2)^(-5)