Question

3x+5y = 11
2x-2y = 16

Answer 1

$2x-2y=16\\x-y=8\\x=8+y$
_______________
$3x+5y=11\\3*(8+y)+5y=11\\24+3y+5y=11\\8y+24=11\\8y=11-24\\8y=-13\\y= \frac{-13}{8}$
_______________
$2x-2y=16\\\\2x-2*( \frac{-13}{8}) =16\\\\2x+ \frac{26}{8} =16\\\\2x+ \frac{13}{4} =16\\\\2x=16- \frac{13}{4} \\\\2x= \frac{64-13}{4} \\\\2x= \frac{51}{4} \\\\x= \frac{51}{8}$