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

Any help is much appreciated!

Question

20-05-2015
Mathematics

Answered

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

Any help is much appreciated!

Sagot :

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naǫ naǫ · Answer 1 · 2015-05-21T12:09:44-04:00

naǫ naǫ

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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