Three times a number plus twice another is 10, while their sum is 10, Find the numbers

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02-10-2014
Mathematics

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Three times a number plus twice another is 10, while their sum is 10, Find the numbers

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mariamikayla mariamikayla · Answer 1 · 2014-10-02T20:17:36+02:00

mariamikayla mariamikayla

02-10-2014

[tex]3a+2b=10 \\\\ a+b=10 \\\\ \boxed{a=10-b} \\\\ 3(10-b)+2b=10 \\\\ 30-3b+b=10 \\\\ -b=10-30 \\\\ -b=-20 \\\\ \boxed{b=20} \\\\ a=10-20 \\\\ \boxed{a=-10}[/tex]

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