uklad ruwnań
klamra 3x+4y=2
klamra 5x+7y=1
zadanie w zalaczniku
{3x+4y=2 /*(-5)
{5x+7=1 /*3
{-15x-20y=-10
+ {15x+21y=3
_______________
1y=-7 /:1
y=-7
3x+4(-7)=2
3x+28=2
3x=28+2
3x=30 / :3
x=10
{x= 10
{y= -7
chyba tak ma byc. :)
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zadanie w zalaczniku
{3x+4y=2 /*(-5)
{5x+7=1 /*3
{-15x-20y=-10
+ {15x+21y=3
_______________
1y=-7 /:1
y=-7
3x+4(-7)=2
3x+28=2
3x=28+2
3x=30 / :3
x=10
{x= 10
{y= -7
chyba tak ma byc. :)