Odpowiedzi

2010-03-08T17:38:16+01:00
-1/3x+x=3/5+1/2+2/5
2/3x=1 i 1/2 |:2/3
x=9/4=2 i 1/4

y+6-3y:2=-4 i 1/2
-1/2y=-4 i 1/2 -6
-1/2y=-10 i 1/2 |:(-1/2)
y=20 i 1/2

x-1/2=4,6 + 3 1/2x
-2 1/2x=5,1 |:(-2 1/2)
x=-2 1/25

2,5 - 2 : 2 = 8x + 0,5 : 7
1,5=8x+3 1/2
1,5-3 1/2=8x
-2=8x |b
-1/4=x

x - 5 : 8 = 5x - 18 : 12
x-5x=-3/2+5/8
-4x=-7/8 |:(-4)
x=7/32

4/9x - 2 = 5/12x - 1 1/3