A 1/2x + 3/4 = 1/8
B. 3x/5 - 1/5 = 2
E. x/2 + 2x/3 = 3/4
M. x - 1
========== = x + 7
4 -----------
5
O. x + 3
---------- + x + 2
5 ---------- = 0,3
2
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A
1/2x + 3/4 = 1/8 / * 8
4x+6 = 1
4x= 1-6
4X= -5
X=5/4
B. 3x/5 - 1/5 = 2 / * 5
3x-1 = 10
3x= 10+1
3x= 11
X= 11/3
E.
x/2 + 2x/3 = 3/4 / * 12
6x+8x = 9
14 x= 9
X= 9/14
M.
(x-1) : 4/5 = x+ 7
(x-1) * 5/4 = x+ 7 / * 4
5( x-1) = 4x + 28
5x-5 = 4x+ 28
5x-4x= 28+5
x= 33
* znak mnożenia