Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
8-4x-\left(-12\right)=8x-\left(3x-2\right)
Hei kimi i te tauaro o 4x-12, kimihia te tauaro o ia taurangi.
8-4x+12=8x-\left(3x-2\right)
Ko te tauaro o -12 ko 12.
20-4x=8x-\left(3x-2\right)
Tāpirihia te 8 ki te 12, ka 20.
20-4x=8x-3x-\left(-2\right)
Hei kimi i te tauaro o 3x-2, kimihia te tauaro o ia taurangi.
20-4x=8x-3x+2
Ko te tauaro o -2 ko 2.
20-4x=5x+2
Pahekotia te 8x me -3x, ka 5x.
20-4x-5x=2
Tangohia te 5x mai i ngā taha e rua.
20-9x=2
Pahekotia te -4x me -5x, ka -9x.
-9x=2-20
Tangohia te 20 mai i ngā taha e rua.
-9x=-18
Tangohia te 20 i te 2, ka -18.
x=\frac{-18}{-9}
Whakawehea ngā taha e rua ki te -9.
x=2
Whakawehea te -18 ki te -9, kia riro ko 2.
Ngā Tauira
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Ngā Tepe
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