Whakaoti mō x
x=-\frac{2}{5}=-0.4
Graph
Tohaina
Kua tāruatia ki te papatopenga
75x+15=45x+3
Whakamahia te āhuatanga tohatoha hei whakarea te 15 ki te 5x+1.
75x+15-45x=3
Tangohia te 45x mai i ngā taha e rua.
30x+15=3
Pahekotia te 75x me -45x, ka 30x.
30x=3-15
Tangohia te 15 mai i ngā taha e rua.
30x=-12
Tangohia te 15 i te 3, ka -12.
x=\frac{-12}{30}
Whakawehea ngā taha e rua ki te 30.
x=-\frac{2}{5}
Whakahekea te hautanga \frac{-12}{30} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 6.
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]
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Whakarerekētanga
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Ngā Tepe
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