3x-4 2x-7
------ - -------- + x = 4
3 6
3x x 2x
------- + ----- - ------- = 13
2 6 9
3x-12
--------- + x = 5-2x
2
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(3x-4)/ 3 - (2x-7)/6 + x=4 I*6
2*(3x-4) - (2x-7) + 6x= 24
6x - 8 - 2x - 7 + 6x=24
6x-2x+6x=24+8+7
10x=39 I:10
x=3,9
3x/2+x/6-2x/9=13
9x/6+ x/6-2x/9=13
10x/6-2x/9=13
90x/54-12x/54=13
78x/54=13 I*54
78x=702 I:78
x=9
3x-12/2 + x=5-2x I*2
3x-12 + 2x = 10 - 4x
3x+2x+4x=10+12
9x=22 I:9
x≈2,(4)
Mam nadzieję, że pomogłam :)
3x -4 2x - 7
_______ - ______ +x = 4 /*6
3 6
6x -8 -2x -7 + 6x = 24
6x -2x +6x = 24 +8 + 7
10x = 39 /:10
x = 3,9
3x /2 + x /6 -2x /9 =13 /*18
27x + 3x -4x = 234
26x = 234 /:26
x = 9
(3x -12) /2 + x = 5 - 2x /*2
3x -12 + 2x = 10 - 4x
3x +2x +4x = 10 +12
9x = 22 /:9
x = 2i4/9