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x, y, and z all equal 2100. x and y together are 3 times z

 Jan 29, 2015

Best Answer 

 #1
avatar+23245 
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x + y + z  =  2100

Since x + y  =  3z, remove x = y from the equation and replace it with 3z:

3z + z  =  2100

   4z  =  2100

Divide both sides by 4:

    z  =  525

 Jan 29, 2015
 #1
avatar+23245 
+5
Best Answer

x + y + z  =  2100

Since x + y  =  3z, remove x = y from the equation and replace it with 3z:

3z + z  =  2100

   4z  =  2100

Divide both sides by 4:

    z  =  525

geno3141 Jan 29, 2015

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