5x-3y=10
2x+6y=12
Reshenie:
1)-10x+6y=-20
2x+6y=12
2)вычитаем оба
-12x=-32
x=32/12
1)8<span> x=38.9-6.1</span>
<span> 8 x=32.8</span>
<span>x=</span>4,1
2)<span>x =</span><span>75,6</span><span>/</span><span>14</span>
x=5,4
-|х|=-2 /:(-1)
|х|=2
х=2 х=-2
Ответ {-2; 2}