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Write a two-column proof.

Given: 7y = 8x – 14; y = 6

Prove: x = 7 

party.girl286  Nov 1, 2017
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1.   7y = 8x – 14              Given

 

2.    y = 6                         Given

 

3.    7(6) = 8x – 14           Substitution of 2  into 1

 

4.    42  =  8x - 14            Simplification of 3 

 

5.    56  =  8x                   Addition Property of Equality

 

6.     7  = x                       Division Property of Equality

 

 

cool cool cool

CPhill  Nov 2, 2017

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