Whakaoti mō x
x=-2
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x-x-2x-8=3x
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x+4.
-x-8=3x
Pahekotia te 2x me -2x, ka 0.
-x-8-3x=0
Tangohia te 3x mai i ngā taha e rua.
-x-3x=8
Me tāpiri te 8 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
-4x=8
Pahekotia te -x me -3x, ka -4x.
x=\frac{8}{-4}
Whakawehea ngā taha e rua ki te -4.
x=-2
Whakawehea te 8 ki te -4, kia riro ko -2.
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