Whakaoti mō z
z=7
Tohaina
Kua tāruatia ki te papatopenga
18z+3=-\left(-20z+11\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 6z+1.
18z+3=-\left(-20z\right)-11
Hei kimi i te tauaro o -20z+11, kimihia te tauaro o ia taurangi.
18z+3=20z-11
Ko te tauaro o -20z ko 20z.
18z+3-20z=-11
Tangohia te 20z mai i ngā taha e rua.
-2z+3=-11
Pahekotia te 18z me -20z, ka -2z.
-2z=-11-3
Tangohia te 3 mai i ngā taha e rua.
-2z=-14
Tangohia te 3 i te -11, ka -14.
z=\frac{-14}{-2}
Whakawehea ngā taha e rua ki te -2.
z=7
Whakawehea te -14 ki te -2, kia riro ko 7.
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