Whakaoti mō x
x = -\frac{7}{2} = -3\frac{1}{2} = -3.5
Graph
Tohaina
Kua tāruatia ki te papatopenga
-18x-15+2\times 4x=20
Whakamahia te āhuatanga tohatoha hei whakarea te -3 ki te 6x+5.
-18x-15+8x=20
Whakareatia te 2 ki te 4, ka 8.
-10x-15=20
Pahekotia te -18x me 8x, ka -10x.
-10x=20+15
Me tāpiri te 15 ki ngā taha e rua.
-10x=35
Tāpirihia te 20 ki te 15, ka 35.
x=\frac{35}{-10}
Whakawehea ngā taha e rua ki te -10.
x=-\frac{7}{2}
Whakahekea te hautanga \frac{35}{-10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.
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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Whakarerekētanga
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Whakaurunga
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Ngā Tepe
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