Question

When x =1/2 and y = 1/8, -5x + 14y =

Answer 1

-3/4

Explanation:

Plug in values of x and y into expression:

`-5((1)/(2))+14((1)/(8))=`

`-(5)/(2) +(14)/(8)=`

Find common denominator:

`-(5*4)/(2*4) +(14)/(8)=`

`-(20)/(8) +(14)/(8)=(14)/(8)-(20)/(8)=`

Solve numerator:

`14-20=-6`

So,

`=-(6)/(8)=-(3)/(4)`

Answer 2

-5x1/2= -2.5 14x1/8= 1.75

Explanation:

-2.5+1.75=-0.75