Odpowiedzi

2010-04-13T15:52:01+02:00
A) x/3+1=5/6+x/2 ]* 6
2x+ 6 = 5+ 3x
-x = -1 ]÷ (-1)
x= 1

b) 2x-3/4=1/2+x ]*4
8x -3 = 2 +4x
4x = 5 ]÷4
x= 5 \4
2010-04-13T15:53:44+02:00
A) x/3+1=5/6+x/2 /*6
x/3 *6 +1*6=5/6 *6+x/2 *6
x*2 + 6=5+ x*3
2x+6=5 +3x /-2x
6=5+1x /-5
1=x

b) 2x-3/4=1/2+x /*4
2x*4 - 3/4 *4= 1/2 *4 + x*4
8x-3=2+ 4x /+3
8x=5+4x /-4x
4x=5 /:4
x=5/4 tu kreska ułamkowa

jak cos to / ukośnik
2010-04-13T15:55:14+02:00
A)x/3+1=5/6+x/2 | * 6
2x+6=5+3x
2x-3x=5-6
-x=-1 | *(-1)
x=1

b)2x-3/4=1/2+x | * 4
8x-3=2+4x
8x-4x=2+3
4x=5 | : 4
x=5/4