Równania: / to kreska ułamkowa
3x/2 + x/6 - 2x/9 = 13
5x-4/2 = 16x + 1/7
(2x-3)(2x+3)-4x(x+2)+49=-4x
3x/2+ x/6- 2x/9=13
27x/18+ 3x/18- 4x/18=13
26x/18=13
26x/18= 13
13x/9= 13/13
x= 9
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3x/2+ x/6- 2x/9=13
27x/18+ 3x/18- 4x/18=13
26x/18=13
26x/18= 13
13x/9= 13/13
x= 9