Whakaoti mō b
b\in \mathrm{R}
Tohaina
Kua tāruatia ki te papatopenga
2\left(2b-1\right)-1=4b-3
Me whakarea ngā taha e rua o te whārite ki te 4, arā, te tauraro pātahi he tino iti rawa te kitea o 2,4.
4b-2-1=4b-3
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 2b-1.
4b-3=4b-3
Tangohia te 1 i te -2, ka -3.
4b-3-4b=-3
Tangohia te 4b mai i ngā taha e rua.
-3=-3
Pahekotia te 4b me -4b, ka 0.
\text{true}
Whakatauritea te -3 me te -3.
b\in \mathrm{R}
He pono tēnei mō tētahi b ahakoa.
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