Rozwiąż układ równań:
{x-y=-2
3x-y=x+1
Ma być dobrze :)
{x-y= -2 /*(-2) 3x-x-y=1{-2x+2y= 4 2x-y= 1 --------> 2x-5=1 y=5 2x= 6 x=3
Sorki wczesniej bylo zle
{x-y=-2-----> x-5=-2
3x-y=x+1 x=-2+5
x=3
{x=-2+y
3(-2+y)-y=-2+y+1
-6+3y-y=-2+y+1
3y-y-y=6-2+1
2y-y=4+1
y=5
{y=5
jest dobrze :P
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{x-y= -2 /*(-2)
3x-x-y=1
{-2x+2y= 4
2x-y= 1 --------> 2x-5=1
y=5 2x= 6
x=3
Sorki wczesniej bylo zle
{x-y=-2-----> x-5=-2
3x-y=x+1 x=-2+5
x=3
{x=-2+y
3(-2+y)-y=-2+y+1
{x=-2+y
-6+3y-y=-2+y+1
{x=-2+y
3y-y-y=6-2+1
{x=-2+y
2y-y=4+1
{x=-2+y
y=5
{y=5
x=3
jest dobrze :P