Как решить системы уравнений ? 1 и 3 скриншоты.
{(x+2)(x-2)<(x+3)(4-x)
{ 3+x 1 - 2x
------- + -------- больше и/ или равно 1
4 6

{ 3x + 7y =1
{ (3x +7y) (x - 3y) = 11
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