Question

Resolver por sustitución

Answer 1

2x+3y=11

4x-2y=18

$2x+3y=11\\ 2x=11-3y\\ x= \frac{11-3y}{2} \\ \\ 4x-2y=18\\ 4(\frac{11-3y}{2})-2y=18\\ 2(11-3y)-2y=18\\ 22-6y-2y=18\\ -8y= 18-22\\ -8y=-4\\ y=\frac{-4}{-8}\\y= 1/2\\ \\ x= \frac{11-3y}{2}\\ x= \frac{11-3(\frac{1}{2} )}{2}\\ \\ x= \frac{11-\frac{3}{2}}{2}\\\\  x= \frac{\frac{22-3}{2}}{2}\\\\  x= \frac{\frac{19}{2}  </p><p>}{2} \\\\ x= \frac{19}{4}$