Rozwiaz znajdź x 2x+9=25 . X+x+4x+5=6 . X+12=1 1/2
2x+9=25
2x=25-9
2x=16/2
x=8
X+x+4x+5=6
6x=6-5
6x=1/6
x=1/6
2x=16/:2
6x=1/:6
X+12=1 1/2
x=1 1/2-12
x=-10 1/2
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2x+9=25
2x=25-9
2x=16/2
x=8
X+x+4x+5=6
6x=6-5
6x=1/6
x=1/6
2x+9=25
2x=25-9
2x=16/:2
x=8
X+x+4x+5=6
6x=6-5
6x=1/:6
x=1/6
X+12=1 1/2
x=1 1/2-12
x=-10 1/2