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{-x+2y=14
{4x+3y=10
{-x= -2y+14 / : (-1)
{4x+3y=10
{x=2y-14
4*(2y-14)+3y=10
11y-56=10
11y=66 / : 11
y=6
x=2*6-14
x= -2
{x= -2
{y=6