Whakaoti mō x
x=-13
Graph
Tohaina
Kua tāruatia ki te papatopenga
x+4=2x+5+12
Pahekotia te x me x, ka 2x.
x+4=2x+17
Tāpirihia te 5 ki te 12, ka 17.
x+4-2x=17
Tangohia te 2x mai i ngā taha e rua.
-x+4=17
Pahekotia te x me -2x, ka -x.
-x=17-4
Tangohia te 4 mai i ngā taha e rua.
-x=13
Tangohia te 4 i te 17, ka 13.
x=-13
Me whakarea ngā taha e rua ki te -1.
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