Question

5x + y = 1
-3х + Зу = -5​

Answer 1

♥

$\left \{{{5x+y=1}\atop {-3x+3y=-5}} \right. \\\\\left \{ {{y=1-5x} \atop {-3x+3y=-5}} \right. \\\\-3x+3(1-5x)=-5$

$x=\frac{4}{9} \\\\y=1-5x\frac{4}{9} \\\\ y=-\frac{11}{9} \\\\(x,y)=(\frac{4}{9} ,- \frac{11}{9} )$