Question

способ прибавления ; 6x+y=10; 6x-3y =-26

Answer 1

$left { {{6x+y=10} atop {6x-3y=-26}} right.$ = $left { {{y=10-6x} atop {6x-3y=-26}} right.$ = 6x-3(10-6x) = -26
6x-30+18x=-26
24x=-26+30
24x=4
x=$frac{1}{6}$
y = 10-$frac{1}{6}$ = 9

Answer 2

y = 10 - 6*(1/6) = 9