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solve the pair of stmultaneous equations

 

5x+y=13

y=3x-11

 Sep 21, 2020
 #1
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The second equation (y=3x-11) defines y     substitute this for 'y' into the first equation

 

5x  + (3x-11) = 13     now solve for x    then use this value of x in one of the equations to solve for 'y'

 Sep 21, 2020

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