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2010-04-11T17:38:05+02:00
A)102=2x/:2
x=51
b)36=9x/:9
x=4
c)6=-12x/:-12
x=-1/2
d)4=1/2x/*2
x=8
1 5 1
2010-04-11T17:41:29+02:00
A) 97 = 2x - 5
-2x= -5-97
-2x=-102/:-2
x=51

b) 43 = 7 + 9x
-9x=7-43
-9x=-34/:-9
x=4
c) 17 = 11 - 12x
12x= 11-17
12x=-6/:12
x= -1/2

d) 3 i 2/3 = 1/2x - 1/3
-1/2x=-1/3-3i 2/3
-1/2x=-3 i 1/3/ *-2
x= 6 i 2/3
1 5 1
2010-04-11T17:47:19+02:00
A) 97-2x-5
-2x=-5-97
-2x=-102 /:(-2)
x=51

b)43=7+9x
-9x=7-43
-9x=-36 /:(-9)
x=4

c) 17+11-12x
12x=11-17
12x=-6 /:12
x=-0,5

d) 3i2/3 = 1/2x - 1/3
-1/2x= -3i 2/3 - 1/3
-1/2x= 4 /* (-2)
x= -2
1 5 1