+0  
 
0
651
2
avatar+386 

(x/3) + (y/2) = 14

 

(x/2) + (y/5) = 10

 Dec 4, 2016

Best Answer 

 #2
avatar+12530 
+5

(x/3) + (y/2) = 14

 

(x/2) + (y/5) = 10

 

laugh

 Dec 4, 2016
 #1
avatar
+5

Solve the following system:
{x/3 + y/2 = 14 | (equation 1)
x/2 + y/5 = 10 | (equation 2)
Swap equation 1 with equation 2:
{x/2 + y/5 = 10 | (equation 1)
x/3 + y/2 = 14 | (equation 2)
Subtract 2/3 × (equation 1) from equation 2:
{x/2 + y/5 = 10 | (equation 1)
0 x+(11 y)/30 = 22/3 | (equation 2)
Multiply equation 1 by 10:
{5 x + 2 y = 100 | (equation 1)
0 x+(11 y)/30 = 22/3 | (equation 2)
Multiply equation 2 by 30/11:
{5 x + 2 y = 100 | (equation 1)
0 x+y = 20 | (equation 2)
Subtract 2 × (equation 2) from equation 1:
{5 x+0 y = 60 | (equation 1)
0 x+y = 20 | (equation 2)
Divide equation 1 by 5:
{x+0 y = 12 | (equation 1)
0 x+y = 20 | (equation 2)
Collect results:
Answer: |x = 12                   and                    y = 20

 Dec 4, 2016
 #2
avatar+12530 
+5
Best Answer

(x/3) + (y/2) = 14

 

(x/2) + (y/5) = 10

 

laugh

Omi67 Dec 4, 2016

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