Evaluate the expression for x = 5, y = 3, and z = 14 . 5x−6y+20z / 4yz

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asked Jul 8, 2019 72.9k views

4 votes

Evaluate the expression for x = 5, y = 3, and z = 14 . 5x−6y+20z / 4yz

Mathematics
middle-school

Sanorita asked

by Sanorita

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1 Answer

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Substitute the values of x, y and z to the expression:

$x=5,\ y=3,\ z=14\\\\(5x-6y+20z)/(4yz)=((5)(5)-(6)(3)+(20)(14))/((4)(3)(14))=(25-18+280)/((12)(14))\\\\=(7+280)/(168)=(287)/(168)=1(119)/(168)=1(119:7)/(168:7)=1(17)/(24)$

Pavle Mijatovic answered Jul 15, 2019

by Pavle Mijatovic

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