Whakaoti mō x
x=8
Graph
Pātaitai
Linear Equation
3(x-4)-(8-x)=12
Tohaina
Kua tāruatia ki te papatopenga
3x-12-\left(8-x\right)=12
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te x-4.
3x-12-8-\left(-x\right)=12
Hei kimi i te tauaro o 8-x, kimihia te tauaro o ia taurangi.
3x-12-8+x=12
Ko te tauaro o -x ko x.
3x-20+x=12
Tangohia te 8 i te -12, ka -20.
4x-20=12
Pahekotia te 3x me x, ka 4x.
4x=12+20
Me tāpiri te 20 ki ngā taha e rua.
4x=32
Tāpirihia te 12 ki te 20, ka 32.
x=\frac{32}{4}
Whakawehea ngā taha e rua ki te 4.
x=8
Whakawehea te 32 ki te 4, kia riro ko 8.
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