Równania z jedną niewiadomą
3(1-x)-(1-2x)=9
(-1/2x+1)+3x/2=3
3-3x-1+2x=9
-x+2=9/-2
-x=7/*(-1)
x+-7
(-1/2x+1)+3x/2=3/*2
-1x+2+3x=6/-2
2x=4/:2
x=2
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3(1-x)-(1-2x)=9
3-3x-1+2x=9
-x+2=9/-2
-x=7/*(-1)
x+-7
(-1/2x+1)+3x/2=3/*2
-1x+2+3x=6/-2
2x=4/:2
x=2