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Q: What are two symbolic techniques used to solve linear equations? Which do you feel is better? Explain why.
A: Elimination and substitution are two methods. If you readily see how to do the elimination, it is quicker. Substitution, however, [ is much more general and completely independent of immediate perception. So each technique has its own peculiar merit. Consequently, I doubt that there a single criterion that permits ranking. Just my opinion. Others may disagree; see what they say. ]
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solve the system by substitution. 6x+8y=44 4x-8y= -64 simplify your answer type an ordered pair.
Weegy: 6x+8y=44 4x-8y= -64 (More)
Question
Updated 42 days ago|3/13/2018 6:29:41 PM
6x + 8y = 44 ;
4x - 8y = -64;

(6x + 8y = 44) + (4x - 8y = -64) ;
10x = -20 ;
x = -20/10 ;
x = -2 ;

6(-2) + 8y = 44 ;
-12 + 8y = 44 ;
8y = 44 + 12 ;
8y = 56 ;
y = 56/8 ;
y = 7 ;

Solution set: (-2, 7)
Added 42 days ago|3/13/2018 6:29:41 PM
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