Whakaoti mō x
x=4
Graph
Tohaina
Kua tāruatia ki te papatopenga
4\times 3x-2\left(x-2\right)=40+x
Me whakarea ngā taha e rua o te whārite ki te 8, arā, te tauraro pātahi he tino iti rawa te kitea o 2,4,8.
12x-2\left(x-2\right)=40+x
Whakareatia te 4 ki te 3, ka 12.
12x-2x+4=40+x
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x-2.
10x+4=40+x
Pahekotia te 12x me -2x, ka 10x.
10x+4-x=40
Tangohia te x mai i ngā taha e rua.
9x+4=40
Pahekotia te 10x me -x, ka 9x.
9x=40-4
Tangohia te 4 mai i ngā taha e rua.
9x=36
Tangohia te 4 i te 40, ka 36.
x=\frac{36}{9}
Whakawehea ngā taha e rua ki te 9.
x=4
Whakawehea te 36 ki te 9, kia riro ko 4.
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