Объяснение:
{4х+2у=1
{-2х+у=3 |×2
{-4х+2у=6
+ ————
4у=7
У=7/4
4х=1-2у
4х=1-2×7/4
4х=1-7/2
4х= - 5/2
Х= - 5/2×1/4
Х= - 5/8
Ответ : (-5/8; 7/4)
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Объяснение:
{4х+2у=1
{-2х+у=3 |×2
{4х+2у=1
{-4х+2у=6
+ ————
4у=7
У=7/4
4х=1-2у
4х=1-2×7/4
4х=1-7/2
4х= - 5/2
Х= - 5/2×1/4
Х= - 5/8
Ответ : (-5/8; 7/4)