Question

resuleve por sustiticion 5x+2y=1
-3x+3y=5

Answer 1

Respuesta:

x=$\frac{1}{3}  y= \frac{-1}{3}$

Explicación paso a paso:

despejamos x

5x+2y=1

-3x+3y=5

2y= 1 -5x

$\frac{<strong>2</strong>y}{<strong>2</strong>}= \frac{1}{2}- \frac{5}{2}$

$y=\{-5x}{2} +\frac{1}{2}$

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sustituimos y

-3x+3$\frac{-5x+1}{2}$=5

-6x - 15x +3 =10

-6x -15x =10 - 3

21x= 7

$\frac<strong>{21</strong>x}{<strong>21</strong>}=\frac{7}{21}$

x=$\frac{7}{21}$

$x=\frac{1}{3}$

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sustituimos x

$y=\frac{-5*\frac{1}{3} +1 }{2}$

$y=\frac{\frac{-5}{3} +1 }{2}$

$y=\frac{-2}{3}÷\frac{2}{1}$

y=$\frac{-2}{6}$

y=$\frac{-1}{3}$