rozwiązywanie układów równań
pomocy !
(tutaj jest ta klamra) 2x+y=9
5x-4=3
{8x+4y=36
5x-4y=3
8x+4y+5x-4y=39
13x=39
x=3
y=3
2x + y = 9
5x - 4 = 3
5x = -1 / : 5
x= - 1/5
2 * (-1/5) + y = 9
y= 9 + 2/5
y= 9 2/5
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{8x+4y=36
5x-4y=3
8x+4y+5x-4y=39
13x=39
x=3
y=3
2x + y = 9
5x - 4 = 3
2x + y = 9
5x = -1 / : 5
2x + y = 9
x= - 1/5
2 * (-1/5) + y = 9
x= - 1/5
y= 9 + 2/5
x= - 1/5
y= 9 2/5