Whakaoti mō z
z=-4.3
Tohaina
Kua tāruatia ki te papatopenga
-1.3-z=3
Tāpirihia te -2.2 ki te 0.9, ka -1.3.
-z=3+1.3
Me tāpiri te 1.3 ki ngā taha e rua.
-z=4.3
Tāpirihia te 3 ki te 1.3, ka 4.3.
z=-4.3
Me whakarea ngā taha e rua ki te -1.
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