+0  
 
-1
69
1
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Help on system of equations using substitution

 

 Jul 20, 2020
 #1
avatar+27607 
+1

x = 4y-3     from second equation    sub this in for 'x' in the first equation

 

5 (4y-3) + 2y = -15

20y - 15 + 2y  = -15

y = 0      then     x = -3

 Jul 20, 2020

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