Whakaoti mō z
z=-\frac{13}{66}\approx -0.196969697
Tohaina
Kua tāruatia ki te papatopenga
z-4z=\frac{39}{66}
Whakawehea ngā taha e rua ki te 66.
z-4z=\frac{13}{22}
Whakahekea te hautanga \frac{39}{66} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
-3z=\frac{13}{22}
Pahekotia te z me -4z, ka -3z.
z=\frac{\frac{13}{22}}{-3}
Whakawehea ngā taha e rua ki te -3.
z=\frac{13}{22\left(-3\right)}
Tuhia te \frac{\frac{13}{22}}{-3} hei hautanga kotahi.
z=\frac{13}{-66}
Whakareatia te 22 ki te -3, ka -66.
z=-\frac{13}{66}
Ka taea te hautanga \frac{13}{-66} te tuhi anō ko -\frac{13}{66} mā te tango i te tohu tōraro.
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