Whakaoti mō z
z = -\frac{13}{2} = -6\frac{1}{2} = -6.5
Tohaina
Kua tāruatia ki te papatopenga
8z-5=10z+8
Pahekotia te 20z me -12z, ka 8z.
8z-5-10z=8
Tangohia te 10z mai i ngā taha e rua.
-2z-5=8
Pahekotia te 8z me -10z, ka -2z.
-2z=8+5
Me tāpiri te 5 ki ngā taha e rua.
-2z=13
Tāpirihia te 8 ki te 5, ka 13.
z=\frac{13}{-2}
Whakawehea ngā taha e rua ki te -2.
z=-\frac{13}{2}
Ka taea te hautanga \frac{13}{-2} te tuhi anō ko -\frac{13}{2} mā te tango i te tohu tōraro.
Ngā Tauira
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