Whakaoti mō x
x=20
Graph
Tohaina
Kua tāruatia ki te papatopenga
x+20=2x
Tē taea kia ōrite te tāupe x ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te 2x.
x+20-2x=0
Tangohia te 2x mai i ngā taha e rua.
-x+20=0
Pahekotia te x me -2x, ka -x.
-x=-20
Tangohia te 20 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=20
Me whakarea ngā taha e rua ki te -1.
Ngā Tauira
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