Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
120x=90\left(2x-2\right)
Whakareatia te 10 ki te 12, ka 120.
120x=180x-180
Whakamahia te āhuatanga tohatoha hei whakarea te 90 ki te 2x-2.
120x-180x=-180
Tangohia te 180x mai i ngā taha e rua.
-60x=-180
Pahekotia te 120x me -180x, ka -60x.
x=\frac{-180}{-60}
Whakawehea ngā taha e rua ki te -60.
x=3
Whakawehea te -180 ki te -60, kia riro ko 3.
Ngā Tauira
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
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