Odpowiedzi

2010-02-24T15:37:02+01:00
2[x+4]-6=3[x-2]+7x
2x+8-6 = 3x-6+7x
2x-3x-7x = -6+6-8
-8x= -8 / :(-8)
x= 1

3[y+1]+6y=-2[y-1]+8
3y+3+6y = -2y+2+8
3y+6y+2y = 2+8-3
11y = 7 /:11
y= ⁷/₁₁
2010-02-24T15:37:24+01:00
2[x+4]-6=3[x-2]+7x
2x+8-6 = 3x-6+7x
2x+2 = 10X-6 /-2x +6
8x = 8
x = 1


3[y+1]+6y=-2[y-1]+8
3y+3+6y = -2y+2+8
9y+3 = -2y+10 /+2y -3
11y = 7 /:11
y = 7/11
2010-02-24T15:38:34+01:00
2x+8-6=3x-6+7x
=2x+2=10x-6

3y+3+6y=2y-2+8
=9y+3=2y+6