Question

$7x - 4y = 2 \ 5x + 11y = 43$

Answer 1

$left { {{7x-4y=2} atop {5x+11y=43}} right. left { {{x= frac{2+4y}{7} } atop {5 (frac{2+4y}{7}) +11y=43}} right. left { {{x= frac{2+4y}{7} } atop {frac{10+20y}{7} +11y=43}} right. left { {{x= frac{2+4y}{7} } atop {{10+20y+77y=301$
$left { {{x= frac{2+4y}{7} } atop {{10+97y=301}} right. left { {{x= frac{2+4y}{7} } atop {{y= frac{291}{97}=3 }} right. left { {{x= frac{2+4*3}{7} } atop {{y=3}} right. left { {{x= frac{14}{7}=2 } atop {{y=3}} right. left { {{x= 2 } atop {{y=3}} right.$