Whakaoti mō D
D=\Delta +3
Whakaoti mō Δ
\Delta =D-3
Tohaina
Kua tāruatia ki te papatopenga
\Delta -D=-3
Tangohia te 22 i te 19, ka -3.
-D=-3-\Delta
Tangohia te \Delta mai i ngā taha e rua.
-D=-\Delta -3
He hanga arowhānui tō te whārite.
\frac{-D}{-1}=\frac{-\Delta -3}{-1}
Whakawehea ngā taha e rua ki te -1.
D=\frac{-\Delta -3}{-1}
Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.
D=\Delta +3
Whakawehe -3-\Delta ki te -1.
\Delta -D=-3
Tangohia te 22 i te 19, ka -3.
\Delta =-3+D
Me tāpiri te D ki ngā taha e rua.
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