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Tohaina

2\left(8-24x+12\right)=7\left(3-6x\right)+49
Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te 6x-3.
2\left(20-24x\right)=7\left(3-6x\right)+49
Tāpirihia te 8 ki te 12, ka 20.
40-48x=7\left(3-6x\right)+49
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 20-24x.
40-48x=21-42x+49
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 3-6x.
40-48x=70-42x
Tāpirihia te 21 ki te 49, ka 70.
40-48x+42x=70
Me tāpiri te 42x ki ngā taha e rua.
40-6x=70
Pahekotia te -48x me 42x, ka -6x.
-6x=70-40
Tangohia te 40 mai i ngā taha e rua.
-6x=30
Tangohia te 40 i te 70, ka 30.
x=\frac{30}{-6}
Whakawehea ngā taha e rua ki te -6.
x=-5
Whakawehea te 30 ki te -6, kia riro ko -5.