Whakaoti mō x
x=-4
Graph
Tohaina
Kua tāruatia ki te papatopenga
12x-\left(2x\times 10+x\right)=36
Pahekotia te x\times 10 me 2x, ka 12x.
12x-\left(20x+x\right)=36
Whakareatia te 2 ki te 10, ka 20.
12x-21x=36
Pahekotia te 20x me x, ka 21x.
-9x=36
Pahekotia te 12x me -21x, ka -9x.
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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