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

User Wsanville
by
2.3k points

2 Answers

27 votes
27 votes

Answer:

-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)

User Ram Ahluwalia
by
3.4k points
25 votes
25 votes

Answer:

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

Explanation:

-2.5+1.75=-0.75

User Tim Dierks
by
2.8k points