Whakaoti mō x
x=-\frac{4}{7}\approx -0.571428571
Graph
Tohaina
Kua tāruatia ki te papatopenga
9-9x-5x=17
Tangohia te 5x mai i ngā taha e rua.
9-14x=17
Pahekotia te -9x me -5x, ka -14x.
-14x=17-9
Tangohia te 9 mai i ngā taha e rua.
-14x=8
Tangohia te 9 i te 17, ka 8.
x=\frac{8}{-14}
Whakawehea ngā taha e rua ki te -14.
x=-\frac{4}{7}
Whakahekea te hautanga \frac{8}{-14} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
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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