Question

Necesito resolver esto!!!
2X + 5Y = 3
3X + 7Y = 5

Answer 1

Respuesta:

X= 3/2-5/58

Y = 1/29

$2x = 3 - 5y$

$x = \frac{3 - 5y}{2}$

$3( \frac{3 - 5y}{2} ) + 7y = 5$

$\frac{9 - 15y}{2} + 7y = 5$

$\frac{9}{2} - \frac{15y}{2} + \frac{14y}{2} = 5$

$\frac{29y}{2} = 5 - \frac{9}{2}$

$29y = 2(5 - \frac{9}{2} )$

$y = \frac{2(5 - \frac{9}{2} )}{29}$

$y = \frac{1}{29}$

$x = \frac{3 - 5y}{2} ... \: x = \frac{3 - 5( \frac{1}{29}) }{2}$

$x = \frac{3}{2} - \frac{5}{58}$