Question

Evaluate j- 1/2, if j = 18/23A. 13/46B. 9/23C. 13/23D. 17/21

Answer 1

Here, we want to get the value of the expression given the value of j

To do this, we simply need to make a substitition for j by using the given value

Thus, we have this as;

`(18)/(23)-(1)/(2)`

We get the lowest common factor of 23 and 2 which is 46;

Then we divide 46 by each denominator after we multiply the result of the division by the numerator of each fraction

Thus, we have;

`(2(18)-23)/(46)\text{ = }(36-23)/(46)\text{ = }(13)/(46)`