Whakaoti mō z
z=0
Tohaina
Kua tāruatia ki te papatopenga
8\left(z+8\right)=\left(z+8\right)\times 7+8
Tē taea kia ōrite te tāupe z ki -8 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te z+8.
8z+64=\left(z+8\right)\times 7+8
Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te z+8.
8z+64=7z+56+8
Whakamahia te āhuatanga tohatoha hei whakarea te z+8 ki te 7.
8z+64=7z+64
Tāpirihia te 56 ki te 8, ka 64.
8z+64-7z=64
Tangohia te 7z mai i ngā taha e rua.
z+64=64
Pahekotia te 8z me -7z, ka z.
z=64-64
Tangohia te 64 mai i ngā taha e rua.
z=0
Tangohia te 64 i te 64, ka 0.
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