Question

Find the numerical value of the following expression X+y-z, when X=3,y=-2 and Z=-9​

Answer 1

10

Explanation:

after substituting in the values of each variable, the expression becomes..

3 + (-2) - (-9)

= 3 - 2 - (-9)

= 1 - (-9)

= 1 + 9 = 10