3x+1=16 szybkoooo
3x+1=16
3x=16-1
3x=15 /:3
x=5
3x=15
x=15 podzielić na 3
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3x+1=16
3x=16-1
3x=15 /:3
x=5
3x+1=16
3x=16-1
3x=15
x=15 podzielić na 3
x=5