Sandstorm Sandstorm

31-03-2016
Mathematics

Answered

What is the missing value in the equation

2 3/12+3\? =2 5/8

Verified Answer :

garydesir1 garydesir1

01-04-2016

2 3/12 +3/x = 2 5/8

simplify to

9x+12/4x = 21/8

Cross multiply

(9x+12)/(4x) = 21/8

(9x+12)(8) = 214x

72x+96 = 84x

Subtract 84 x from both side

72x+96 - 84x = 84x -84x

-12x+96 = 0

Subtract 96 from both sides

-12x+96-96 = 0-96

-12x = -96

Divide both sides by 12

-12x/-12 = -96/-12

x = 8

The missing value is 8

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