Question

{6(x+y)+y=8+2(x-y)
{5(y-x-1)+y=3(x+y)

Answer 1

1.6х+6у+у=8+2х-2у
4х+9у=8
2.5у-5х-5+у=3х+3у
-8х+3у=5
4х+9у=8}
-8х+3у=55}