Whakaoti mō x
x=-1.375
Graph
Tohaina
Kua tāruatia ki te papatopenga
0.75-2x=3.5
Whakareatia te 0.5 ki te 1.5, ka 0.75.
-2x=3.5-0.75
Tangohia te 0.75 mai i ngā taha e rua.
-2x=2.75
Tangohia te 0.75 i te 3.5, ka 2.75.
x=\frac{2.75}{-2}
Whakawehea ngā taha e rua ki te -2.
x=\frac{275}{-200}
Whakarohaina te \frac{2.75}{-2} mā te whakarea i te taurunga me te tauraro ki te 100.
x=-\frac{11}{8}
Whakahekea te hautanga \frac{275}{-200} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 25.
Ngā Tauira
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Poukapa
\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]
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Whakarerekētanga
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Whakaurunga
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Ngā Tepe
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