Leedlepickle Leedlepickle

21-05-2015
Mathematics

contestada

What is the best way to solve this system of equations:
5a+3x=452
a+x=108

Any help is much appreciated!

Respuesta :

21-05-2015

[tex]5a+3x=452 \\ a+x=108 \ \ \ |\times (-3) \\ \\ 5a+3x=452 \\ \underline{-3a-3x=-324} \\ 5a-3a=452-324 \\ 2a=128 \ \ \ |\div 2 \\ a=64 \\ \\ a+x=108 \\ 64+x=108 \ \ \ |-64 \\ x=44 \\ \\ \boxed{a=64, x=44}[/tex]

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