Question

1,4x + y - 2= 0 1/3x+y-1=0

Answer 1

1,4х+у-2=0
{
1/3х+у-1=0

у=2-1,4х
{
1/3х+2-1,4х-1=0

1/3х-14/10х=-1
10/30х-42/30х=-1
-32/30х=-1
х=(-1):(-32/30)
х=(-1)*(-30/32)
х=30/32
х=15/16

у=2-1,4х
{
х=15/16

у=2-1,4*15/16
у=2-21/16
у=2 - 1 5/16
у=11/16

у=11/16
{
х=15/16