How do you solve $8 x + 5 y = 184$ $8x+5y=184$ , $x - y = 3$ $x-y=3$ using substitution?

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How do you solve $8 x + 5 y = 184$ $8x+5y=184$ , $x - y = 3$ $x-y=3$ using substitution?

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Answer 1 · 2016-03-30T18:00:01

$(x,y) in {(199/13, 160/13)} subset QQ times QQ$

Explanation:

The second equation have coefficients 1 and -1. Do you want an equation in x? Isolate y.
$x - 3 = y$
From the first,
$8x + 5(x - 3) = 184$
$8x + 5x - 15 = 184$
$13x = 184 + 15$
$x = 199/13$
$y = x - 3 = 199/13 - 3 = 160/13$

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How do you solve $8 x + 5 y = 184$ $8x+5y=184$ , $x - y = 3$ $x-y=3$ using substitution?

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Explanation:

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How do you solve $8 x + 5 y = 184$ $8x+5y=184$ , $x - y = 3$ $x-y=3$ using substitution?