Whakaoti mō z
z=-12
Tohaina
Kua tāruatia ki te papatopenga
3\times 2-9\times 3z+3\times 5z=-8z+54
Me whakarea ngā taha e rua o te whārite ki te 18, arā, te tauraro pātahi he tino iti rawa te kitea o 6,2,9.
6-9\times 3z+3\times 5z=-8z+54
Whakareatia te 3 ki te 2, ka 6.
6-27z+3\times 5z=-8z+54
Whakareatia te -9 ki te 3, ka -27.
6-27z+15z=-8z+54
Whakareatia te 3 ki te 5, ka 15.
6-12z=-8z+54
Pahekotia te -27z me 15z, ka -12z.
6-12z+8z=54
Me tāpiri te 8z ki ngā taha e rua.
6-4z=54
Pahekotia te -12z me 8z, ka -4z.
-4z=54-6
Tangohia te 6 mai i ngā taha e rua.
-4z=48
Tangohia te 6 i te 54, ka 48.
z=\frac{48}{-4}
Whakawehea ngā taha e rua ki te -4.
z=-12
Whakawehea te 48 ki te -4, kia riro ko -12.
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