1. Rozwiąż układ równań :
{ 7x - 11 y = -22
2x + 3y = 18
7x-11y=-22 /·(-2
2x+3y=18 /·7
-14x+22y=44
14x+21y=126
22y+21y=44+126
43y=170 /:43
y=3
2x=18-3y2x=18-3·
2x=18-11
x=6·
x=3
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
7x-11y=-22 /·(-2
2x+3y=18 /·7
-14x+22y=44
14x+21y=126
22y+21y=44+126
43y=170 /:43
y=3
2x=18-3y
2x=18-3·
2x=18-11
x=6·
x=3