Question

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x-10y= 50
6x+3y=72​

Answer 1

Respuesta:

y=-76/21

x=290/21

Explicación paso a paso:

$x - 10y = 50 \\ - y = \frac{50 - x}{10} \\ - y = 5 - \frac{1}{10}x \\ y = - 5 + \frac{1}{10}x$

$6x + 3y = 72 \\ y = \frac{72 - 6x}{3} \\ y = 24 - 2x$

$24 - 2x = - 5 + \frac{1}{10} x \\ 24 + 5 = \frac{1}{10}x + 2x \\ 29 = \frac{21}{10}x \\ 29 \times \frac{10}{21} = x \\ \frac{290}{21} = x$

$y = - 5 + \frac{1}{10} \times \frac{290}{21} \\ y = - 5 + \frac{29}{21} \\ y = - \frac{76}{21}$

Answer 2

Respuesta:

Explicación paso a paso:

X = 50 + 10y

6(50 + 10y) + 3y = 72

300 + 60y + 3y = 72

60y + 3y = 72 + 300

63y = 372

Y = 63/372

Y = 5.9

X - 59 = 50

X = 50 - 59

X = 9