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  • mhms
  • Początkujący
2010-03-23T20:32:46+01:00
A.
5- 7/8x -3/4 = -1 /*8
40 - 7x - 6 = -8
-7x = -42
x=6

b.
4/3x + 2/3 = 2 /*3
4x +2 =6
4x = 4
x=1

c.
5/8x +2 = 3/4 /*8
5x + 16 = 6
5x = -10
x= -2

d.
2x/3 + 5x/2 = 19 /*6
4x +15x = 114
19x = 114
x = 6

e.
3x/2 + x/6 - 2x/9 = 13 /*18
27x + 3x - 4x = 243
26x=243
x=9
1 5 1
2010-03-23T20:34:21+01:00
A) 5- 7/8x - 3/4 = -1 +3/4
5- 7/8x = -1/4 -5
-7/8x= -5 1/4 :(-)1
7/8x = 21/4 : 7/8
x = 21/4 : 7/8
x=6