Whakaoti mō r
r=-11
Tohaina
Kua tāruatia ki te papatopenga
-14-r-2r=19
Tangohia te 2r mai i ngā taha e rua.
-14-3r=19
Pahekotia te -r me -2r, ka -3r.
-3r=19+14
Me tāpiri te 14 ki ngā taha e rua.
-3r=33
Tāpirihia te 19 ki te 14, ka 33.
r=\frac{33}{-3}
Whakawehea ngā taha e rua ki te -3.
r=-11
Whakawehea te 33 ki te -3, kia riro ko -11.
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